Radoičić, Aleksandra

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  • Radoičić, Aleksandra (18)

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Two aspects of honeydew honey authenticity: Application of advance analytical methods and chemometrics

Vasić, Vesna; Đurđić, Slađana Z.; Tosti, Tomislav; Radoičić, Aleksandra; Lušić, Dražen; Milojković-Opsenica, Dušanka; Tešić, Živoslav Lj.; Trifković, Jelena

(2020)

TY  - JOUR
AU  - Vasić, Vesna
AU  - Đurđić, Slađana Z.
AU  - Tosti, Tomislav
AU  - Radoičić, Aleksandra
AU  - Lušić, Dražen
AU  - Milojković-Opsenica, Dušanka
AU  - Tešić, Živoslav Lj.
AU  - Trifković, Jelena
PY  - 2020
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85071837884&doi=10.1016%2fj.foodchem.2019.125457&partnerID=40&md5=fdd751f51c5242dccb27f3a9683cab8f
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/3462
AB  - Taking into account a growing market and small number of articles related to honeydew honey, a metabolomic approach associated with multivariate analysis and modelling was proposed to discriminate five varieties of honey. Advanced analytical techniques were used for determination of 20 elements, 14 carbohydrates and stable carbon isotope ratio. No chemical marker has been found within sugar compounds, but several elements (Ba, Ca, Mg, Sr, Mn, Al, Co, Ni, Se) were marked as characteristic of honey type and allow classification of three botanical origins (Abies alba, Quercus frainetto, Quercus ilex). Sugars turanose, trehalose, arabinose and raffinose, elements Ba, Sr, P, Cd and Se, and δ13C values of honey, have different concentrations in honeys of the same botanical origin but harvested in different season. In addition to a confirmation of authenticity in terms of production, the values of δ13C of protein could be a good indicator of botanical origin.
T2  - Food Chemistry
T1  - Two aspects of honeydew honey authenticity: Application of advance analytical methods and chemometrics
VL  - 305
DO  - 10.1016/j.foodchem.2019.125457
ER  - 
@article{
author = "Vasić, Vesna and Đurđić, Slađana Z. and Tosti, Tomislav and Radoičić, Aleksandra and Lušić, Dražen and Milojković-Opsenica, Dušanka and Tešić, Živoslav Lj. and Trifković, Jelena",
year = "2020",
url = "https://www.scopus.com/inward/record.uri?eid=2-s2.0-85071837884&doi=10.1016%2fj.foodchem.2019.125457&partnerID=40&md5=fdd751f51c5242dccb27f3a9683cab8f, http://cherry.chem.bg.ac.rs/handle/123456789/3462",
abstract = "Taking into account a growing market and small number of articles related to honeydew honey, a metabolomic approach associated with multivariate analysis and modelling was proposed to discriminate five varieties of honey. Advanced analytical techniques were used for determination of 20 elements, 14 carbohydrates and stable carbon isotope ratio. No chemical marker has been found within sugar compounds, but several elements (Ba, Ca, Mg, Sr, Mn, Al, Co, Ni, Se) were marked as characteristic of honey type and allow classification of three botanical origins (Abies alba, Quercus frainetto, Quercus ilex). Sugars turanose, trehalose, arabinose and raffinose, elements Ba, Sr, P, Cd and Se, and δ13C values of honey, have different concentrations in honeys of the same botanical origin but harvested in different season. In addition to a confirmation of authenticity in terms of production, the values of δ13C of protein could be a good indicator of botanical origin.",
journal = "Food Chemistry",
title = "Two aspects of honeydew honey authenticity: Application of advance analytical methods and chemometrics",
volume = "305",
doi = "10.1016/j.foodchem.2019.125457"
}
Vasić, V., Đurđić, S. Z., Tosti, T., Radoičić, A., Lušić, D., Milojković-Opsenica, D., Tešić, Ž. Lj.,& Trifković, J. (2020). Two aspects of honeydew honey authenticity: Application of advance analytical methods and chemometrics.
Food Chemistry, 305.
https://doi.org/10.1016/j.foodchem.2019.125457
Vasić V, Đurđić SZ, Tosti T, Radoičić A, Lušić D, Milojković-Opsenica D, Tešić ŽL, Trifković J. Two aspects of honeydew honey authenticity: Application of advance analytical methods and chemometrics. Food Chemistry. 2020;305
Vasić Vesna, Đurđić Slađana Z., Tosti Tomislav, Radoičić Aleksandra, Lušić Dražen, Milojković-Opsenica Dušanka, Tešić Živoslav Lj., Trifković Jelena, "Two aspects of honeydew honey authenticity: Application of advance analytical methods and chemometrics" Food Chemistry, 305 (2020),
https://doi.org/10.1016/j.foodchem.2019.125457 .
1
15
9
13

Supplementary data for article: Vasić, V.; Đurđić, S.; Tosti, T.; Radoičić, A.; Lušić, D.; Milojković-Opsenica, D.; Tešić, Ž.; Trifković, J. Two Aspects of Honeydew Honey Authenticity: Application of Advance Analytical Methods and Chemometrics. Food Chem. 2020, 305. https://doi.org/10.1016/j.foodchem.2019.125457

Vasić, Vesna; Đurđić, Slađana Z.; Tosti, Tomislav; Radoičić, Aleksandra; Lušić, Dražen; Milojković-Opsenica, Dušanka; Tešić, Živoslav Lj.; Trifković, Jelena

(2020)

TY  - BOOK
AU  - Vasić, Vesna
AU  - Đurđić, Slađana Z.
AU  - Tosti, Tomislav
AU  - Radoičić, Aleksandra
AU  - Lušić, Dražen
AU  - Milojković-Opsenica, Dušanka
AU  - Tešić, Živoslav Lj.
AU  - Trifković, Jelena
PY  - 2020
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85071837884&doi=10.1016%2fj.foodchem.2019.125457&partnerID=40&md5=fdd751f51c5242dccb27f3a9683cab8f
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/3463
T2  - Food Chemistry
T1  - Supplementary data for article: Vasić, V.; Đurđić, S.; Tosti, T.; Radoičić, A.; Lušić, D.; Milojković-Opsenica, D.; Tešić, Ž.; Trifković, J. Two Aspects of Honeydew Honey Authenticity: Application of Advance Analytical Methods and Chemometrics. Food Chem. 2020, 305. https://doi.org/10.1016/j.foodchem.2019.125457
ER  - 
@book{
author = "Vasić, Vesna and Đurđić, Slađana Z. and Tosti, Tomislav and Radoičić, Aleksandra and Lušić, Dražen and Milojković-Opsenica, Dušanka and Tešić, Živoslav Lj. and Trifković, Jelena",
year = "2020",
url = "https://www.scopus.com/inward/record.uri?eid=2-s2.0-85071837884&doi=10.1016%2fj.foodchem.2019.125457&partnerID=40&md5=fdd751f51c5242dccb27f3a9683cab8f, http://cherry.chem.bg.ac.rs/handle/123456789/3463",
journal = "Food Chemistry",
title = "Supplementary data for article: Vasić, V.; Đurđić, S.; Tosti, T.; Radoičić, A.; Lušić, D.; Milojković-Opsenica, D.; Tešić, Ž.; Trifković, J. Two Aspects of Honeydew Honey Authenticity: Application of Advance Analytical Methods and Chemometrics. Food Chem. 2020, 305. https://doi.org/10.1016/j.foodchem.2019.125457"
}
Vasić, V., Đurđić, S. Z., Tosti, T., Radoičić, A., Lušić, D., Milojković-Opsenica, D., Tešić, Ž. Lj.,& Trifković, J. (2020). Supplementary data for article: Vasić, V.; Đurđić, S.; Tosti, T.; Radoičić, A.; Lušić, D.; Milojković-Opsenica, D.; Tešić, Ž.; Trifković, J. Two Aspects of Honeydew Honey Authenticity: Application of Advance Analytical Methods and Chemometrics. Food Chem. 2020, 305. https://doi.org/10.1016/j.foodchem.2019.125457.
Food Chemistry.
Vasić V, Đurđić SZ, Tosti T, Radoičić A, Lušić D, Milojković-Opsenica D, Tešić ŽL, Trifković J. Supplementary data for article: Vasić, V.; Đurđić, S.; Tosti, T.; Radoičić, A.; Lušić, D.; Milojković-Opsenica, D.; Tešić, Ž.; Trifković, J. Two Aspects of Honeydew Honey Authenticity: Application of Advance Analytical Methods and Chemometrics. Food Chem. 2020, 305. https://doi.org/10.1016/j.foodchem.2019.125457. Food Chemistry. 2020;
Vasić Vesna, Đurđić Slađana Z., Tosti Tomislav, Radoičić Aleksandra, Lušić Dražen, Milojković-Opsenica Dušanka, Tešić Živoslav Lj., Trifković Jelena, "Supplementary data for article: Vasić, V.; Đurđić, S.; Tosti, T.; Radoičić, A.; Lušić, D.; Milojković-Opsenica, D.; Tešić, Ž.; Trifković, J. Two Aspects of Honeydew Honey Authenticity: Application of Advance Analytical Methods and Chemometrics. Food Chem. 2020, 305. https://doi.org/10.1016/j.foodchem.2019.125457" Food Chemistry (2020)

Uticaj sadržaja vode u mobilnoj fazi na mehanizam odvajanja malih polarnih molekula

Radoičić, Aleksandra

(Универзитет у Београду, Хемијски факултет, 2019)

TY  - BOOK
AU  - Radoičić, Aleksandra
PY  - 2019
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=6986
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:20477/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=51729679
UR  - http://nardus.mpn.gov.rs/123456789/11669
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/3905
AB  - U okviru ovog rada proučavano je hromatografsko ponašanje serije Ru(II) kompleksa i odabranih anestetika u uslovima hromatografije hidrofilnih interakcija (Hydrophilic Interaction Liquid Chromatography, HILIC). Sistematski je ispitivan uticaj sastava mobilne faze, tačnije sadržaja vode u mobilnoj fazi, na retenciju ovih jedinjenja u različitim hromatografskim sistemima primenom visokoefikasne tankoslojne hromatografije (High Performance Thin-Layer Chromatography, HPTLC) kao brze i efikasne hromatografske tehnike, koja, s obzirom na minimalnu upotrebu rastvarača i potrebu za derivatizacijom, spada u metode zelene analitičke hemije.Za hromatografsko ispitivanje izabrani su sorbenti različite polarnosti i adsorpcionih karakteristika, a kao mobilna faza izabrane su binarne smeše vode i organskih rastvarača različitog sastava, od čiste vode do čistog organskog rastvarača.Utvrđeno je da povećanje sadržaja vode u mobilnoj fazi dovodi do promene mehanizma odvajanja, odnosno obrtanja retencionog redosleda ispitivanih jedinjenja i pretpostavljeno da se sa povećanjem sadržaja vode u mobilnoj fazi mehanizam odvajanja menja od adsorpcije do particije, a retencione krive imaju karakterističan U oblik. Prelaz između adsorpcionog i particionog mehanizma je kontinualan i zavisi od hemijske prirode odvajanih supstanci, stacionarne faze kao i organske komponente mobilne faze.Silika-gel se može smatrati najpogodnijim stacionarnom fazom za odvajanje i sistematsko praćenje hromatografskog ponašanja ispitivanih jedinjenja u HILIC uslovima, dok se acetonitril pokazao kao najpodesniji rastvarač.Dobijeni rezultati doprinose razumevanju dominantnog mehanizma odvajanja, odnosno vrste i jačina interakcija koje se ostvaruju između odvajanih supstanci i stacionarne i mobilne faze, a mogu se upotrebiti i za određivanje važnih fizičko-hemijskih karakteristika analita, naročito lipofilnosti. Takođe, predloženi su optimalni sistemi za brzu i efikasnu analizu polarnih supstanci što je od velikog praktičnog značaja za analitiku lekova, hrane i uzoraka iz životne sredine.Razvijena je i validovana HPTLC metoda za kvantitativno određivanje amigdalina iz različitih uzoraka. Takođe, predložena je i validovana HPTLC metoda za kvantitativno određivanje deset najčešće korišćenih sintetičkih boja za životne namirnice.
AB  - In this study, chromatographic behavior of the Ru(II) complex, and selected anesthetics, was studied under conditions of hydrophilic interaction chromatography (Hydrophilic Interaction Liquid Chromatography, HILIC). The effect of mobile phase composition, precisely, water content in the mobile phase used, on the retention of these compounds in different chromatographic systems was systematically examined using High Performance Thin-Layer Chromatography (HPTLC) as a fast and efficient chromatographic technique which, given the minimal use solvent and the need for derivatisation, belongs to the methods of green analytical chemistry.For the chromatographic investigations the sorbents of different polarity and adsorption characteristics were selected, and mixtures of water and organic solvents of various compositions, from pure water to pure organic solvent, were selected as the mobile phase.It was established that increasing the amount of water in the mobile phase leads to a conversion of the separation mechanism, and assumed that as the water content increases in the mobile phase, the separation mechanism changes from adsorption to the partition, and the retention curves have a characteristic U shape. The conversion between the adsorption and partition mechanisms is most likely continuous and depends on chemical nature of separated substances, stationary phase as well as on organic component of mobile phase.Silica-gel can be considered as the most suitable stationary phase for the systematic investigation of the chromatographic behavior of the test compounds in HILIC conditions, whereas acetonitrile has been shown to be the most suitable solvent.Two new HPTLC methods, for the quantitative determination of the ten most commonly used synthetic food colors and amygdalin from different samples, were developed and proposed.The results obtained contribute to the understanding of the dominant separation mechanism, the type and intensity of the interactions that occur between separated substances and the stationary and mobile phases, and can also be used to determine important physical and chemical characteristics of the compaunds investigated, especially lipophilicity. In addition, the optimal systems for rapid and efficient analysis of polar substances have been proposed, which is of great practical importance for the analysis of drugs, food and environmental samples.
PB  - Универзитет у Београду, Хемијски факултет
T2  - Универзитет у Београду
T1  - Uticaj sadržaja vode u mobilnoj fazi na mehanizam odvajanja malih polarnih molekula
ER  - 
@phdthesis{
author = "Radoičić, Aleksandra",
year = "2019",
url = "http://eteze.bg.ac.rs/application/showtheses?thesesId=6986, https://fedorabg.bg.ac.rs/fedora/get/o:20477/bdef:Content/download, http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=51729679, http://nardus.mpn.gov.rs/123456789/11669, http://cherry.chem.bg.ac.rs/handle/123456789/3905",
abstract = "U okviru ovog rada proučavano je hromatografsko ponašanje serije Ru(II) kompleksa i odabranih anestetika u uslovima hromatografije hidrofilnih interakcija (Hydrophilic Interaction Liquid Chromatography, HILIC). Sistematski je ispitivan uticaj sastava mobilne faze, tačnije sadržaja vode u mobilnoj fazi, na retenciju ovih jedinjenja u različitim hromatografskim sistemima primenom visokoefikasne tankoslojne hromatografije (High Performance Thin-Layer Chromatography, HPTLC) kao brze i efikasne hromatografske tehnike, koja, s obzirom na minimalnu upotrebu rastvarača i potrebu za derivatizacijom, spada u metode zelene analitičke hemije.Za hromatografsko ispitivanje izabrani su sorbenti različite polarnosti i adsorpcionih karakteristika, a kao mobilna faza izabrane su binarne smeše vode i organskih rastvarača različitog sastava, od čiste vode do čistog organskog rastvarača.Utvrđeno je da povećanje sadržaja vode u mobilnoj fazi dovodi do promene mehanizma odvajanja, odnosno obrtanja retencionog redosleda ispitivanih jedinjenja i pretpostavljeno da se sa povećanjem sadržaja vode u mobilnoj fazi mehanizam odvajanja menja od adsorpcije do particije, a retencione krive imaju karakterističan U oblik. Prelaz između adsorpcionog i particionog mehanizma je kontinualan i zavisi od hemijske prirode odvajanih supstanci, stacionarne faze kao i organske komponente mobilne faze.Silika-gel se može smatrati najpogodnijim stacionarnom fazom za odvajanje i sistematsko praćenje hromatografskog ponašanja ispitivanih jedinjenja u HILIC uslovima, dok se acetonitril pokazao kao najpodesniji rastvarač.Dobijeni rezultati doprinose razumevanju dominantnog mehanizma odvajanja, odnosno vrste i jačina interakcija koje se ostvaruju između odvajanih supstanci i stacionarne i mobilne faze, a mogu se upotrebiti i za određivanje važnih fizičko-hemijskih karakteristika analita, naročito lipofilnosti. Takođe, predloženi su optimalni sistemi za brzu i efikasnu analizu polarnih supstanci što je od velikog praktičnog značaja za analitiku lekova, hrane i uzoraka iz životne sredine.Razvijena je i validovana HPTLC metoda za kvantitativno određivanje amigdalina iz različitih uzoraka. Takođe, predložena je i validovana HPTLC metoda za kvantitativno određivanje deset najčešće korišćenih sintetičkih boja za životne namirnice., In this study, chromatographic behavior of the Ru(II) complex, and selected anesthetics, was studied under conditions of hydrophilic interaction chromatography (Hydrophilic Interaction Liquid Chromatography, HILIC). The effect of mobile phase composition, precisely, water content in the mobile phase used, on the retention of these compounds in different chromatographic systems was systematically examined using High Performance Thin-Layer Chromatography (HPTLC) as a fast and efficient chromatographic technique which, given the minimal use solvent and the need for derivatisation, belongs to the methods of green analytical chemistry.For the chromatographic investigations the sorbents of different polarity and adsorption characteristics were selected, and mixtures of water and organic solvents of various compositions, from pure water to pure organic solvent, were selected as the mobile phase.It was established that increasing the amount of water in the mobile phase leads to a conversion of the separation mechanism, and assumed that as the water content increases in the mobile phase, the separation mechanism changes from adsorption to the partition, and the retention curves have a characteristic U shape. The conversion between the adsorption and partition mechanisms is most likely continuous and depends on chemical nature of separated substances, stationary phase as well as on organic component of mobile phase.Silica-gel can be considered as the most suitable stationary phase for the systematic investigation of the chromatographic behavior of the test compounds in HILIC conditions, whereas acetonitrile has been shown to be the most suitable solvent.Two new HPTLC methods, for the quantitative determination of the ten most commonly used synthetic food colors and amygdalin from different samples, were developed and proposed.The results obtained contribute to the understanding of the dominant separation mechanism, the type and intensity of the interactions that occur between separated substances and the stationary and mobile phases, and can also be used to determine important physical and chemical characteristics of the compaunds investigated, especially lipophilicity. In addition, the optimal systems for rapid and efficient analysis of polar substances have been proposed, which is of great practical importance for the analysis of drugs, food and environmental samples.",
publisher = "Универзитет у Београду, Хемијски факултет",
journal = "Универзитет у Београду",
title = "Uticaj sadržaja vode u mobilnoj fazi na mehanizam odvajanja malih polarnih molekula"
}
Radoičić, A. (2019). Uticaj sadržaja vode u mobilnoj fazi na mehanizam odvajanja malih polarnih molekula.
Универзитет у Београду
Универзитет у Београду, Хемијски факултет..
Radoičić A. Uticaj sadržaja vode u mobilnoj fazi na mehanizam odvajanja malih polarnih molekula. Универзитет у Београду. 2019;
Radoičić Aleksandra, "Uticaj sadržaja vode u mobilnoj fazi na mehanizam odvajanja malih polarnih molekula" Универзитет у Београду (2019)

Sugars as Possible Indicator of Honey Authenticity

Tosti, Tomislav; Milojković-Opsenica, Dušanka; Trifković, Jelena; Radoičić, Aleksandra

(New York : Nova Science Publisher, 2019)

TY  - CHAP
AU  - Tosti, Tomislav
AU  - Milojković-Opsenica, Dušanka
AU  - Trifković, Jelena
AU  - Radoičić, Aleksandra
PY  - 2019
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/3937
AB  - Honey is a valuable natural product which offers important nutritional and medicinal benefits. Consequently, it is frequently subjected to adulteration either by addition of various sugar syrups or cheaper and lower quality honey, or by mislabelling of declaration. In that sense, product authentication, as one of the most important food quality assurances, is essential in order to protect the consumers’ health and to avoid competition that can create a destabilized market. The authenticity of the honey has two aspects: the authenticity associated with the production of honey (sugar supplements, removal or addition of water, heating) and the authenticity of the honey related to its description, botanical and geographical origin.
Chemically, honey is a concentrated aqueous solution of various sugars, mainly fructose and glucose, but it also contains other mono-, oligo-, and polysaccharides. Some of the most important characteristics of honey include the sugars’ content, particularly the glucose and the fructose content and their total quantity, as well as a sucrose amount. Some authors demonstrated also that the ratio between glucose and fructose, as well as between some other characteristic sugars, is another parameter of interest in both defining botanical origin of honey and detection of its adulteration. Hence, a detailed analysis of sugars profile in honey samples is a useful tool for verifying product declaration, its botanical origin, as well as to uncover honey adulteration, and has been a long-time scientific preoccupation. At present, a variety of analytical techniques have been developed to determine the content of sugars in honey, such as spectroscopic, chromatographic, and electrochemical. The current compilation aims to provide the cross-section of the results on sugars composition, obtained by contemporary analytical methods, used in honey authentication.
PB  - New York : Nova Science Publisher
T2  - Sugar: Processing, Production and Uses
T1  - Sugars as Possible Indicator of Honey Authenticity
SP  - 1
EP  - 39
ER  - 
@article{
author = "Tosti, Tomislav and Milojković-Opsenica, Dušanka and Trifković, Jelena and Radoičić, Aleksandra",
year = "2019",
url = "http://cherry.chem.bg.ac.rs/handle/123456789/3937",
abstract = "Honey is a valuable natural product which offers important nutritional and medicinal benefits. Consequently, it is frequently subjected to adulteration either by addition of various sugar syrups or cheaper and lower quality honey, or by mislabelling of declaration. In that sense, product authentication, as one of the most important food quality assurances, is essential in order to protect the consumers’ health and to avoid competition that can create a destabilized market. The authenticity of the honey has two aspects: the authenticity associated with the production of honey (sugar supplements, removal or addition of water, heating) and the authenticity of the honey related to its description, botanical and geographical origin.
Chemically, honey is a concentrated aqueous solution of various sugars, mainly fructose and glucose, but it also contains other mono-, oligo-, and polysaccharides. Some of the most important characteristics of honey include the sugars’ content, particularly the glucose and the fructose content and their total quantity, as well as a sucrose amount. Some authors demonstrated also that the ratio between glucose and fructose, as well as between some other characteristic sugars, is another parameter of interest in both defining botanical origin of honey and detection of its adulteration. Hence, a detailed analysis of sugars profile in honey samples is a useful tool for verifying product declaration, its botanical origin, as well as to uncover honey adulteration, and has been a long-time scientific preoccupation. At present, a variety of analytical techniques have been developed to determine the content of sugars in honey, such as spectroscopic, chromatographic, and electrochemical. The current compilation aims to provide the cross-section of the results on sugars composition, obtained by contemporary analytical methods, used in honey authentication.",
publisher = "New York : Nova Science Publisher",
journal = "Sugar: Processing, Production and Uses",
title = "Sugars as Possible Indicator of Honey Authenticity",
pages = "1-39"
}
Tosti, T., Milojković-Opsenica, D., Trifković, J.,& Radoičić, A. (2019). Sugars as Possible Indicator of Honey Authenticity.
Sugar: Processing, Production and Uses
New York : Nova Science Publisher., 1-39.
Tosti T, Milojković-Opsenica D, Trifković J, Radoičić A. Sugars as Possible Indicator of Honey Authenticity. Sugar: Processing, Production and Uses. 2019;:1-39
Tosti Tomislav, Milojković-Opsenica Dušanka, Trifković Jelena, Radoičić Aleksandra, "Sugars as Possible Indicator of Honey Authenticity" Sugar: Processing, Production and Uses (2019):1-39

Supplementary data for article : Ristivojević, P.; Trifković, J.; Stanković, D. M.; Radoičić, A.; Manojlović, D.; Milojković- Opsenica, D. Cyclic Voltammetry and UV/Vis Spectroscopy in Combination with Multivariate Data Analysis for the Assessment of Authenticity of Poplar Type Propolis. Journal of Apicultural Research 2017, 56 (5), 559–568. https://doi.org/10.1080/00218839.2017.1357217

Ristivojević, Petar; Trifković, Jelena; Stanković, Dalibor; Radoičić, Aleksandra; Manojlović, Dragan D.; Milojković-Opsenica, Dušanka

(Taylor & Francis Ltd, Abingdon, 2017)

TY  - BOOK
AU  - Ristivojević, Petar
AU  - Trifković, Jelena
AU  - Stanković, Dalibor
AU  - Radoičić, Aleksandra
AU  - Manojlović, Dragan D.
AU  - Milojković-Opsenica, Dušanka
PY  - 2017
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/3032
PB  - Taylor & Francis Ltd, Abingdon
T2  - Journal of Apicultural Research
T1  - Supplementary data for article : Ristivojević, P.; Trifković, J.; Stanković, D. M.; Radoičić, A.; Manojlović, D.; Milojković- Opsenica, D. Cyclic Voltammetry and UV/Vis Spectroscopy in Combination with Multivariate Data Analysis for the Assessment of Authenticity of Poplar Type Propolis. Journal of Apicultural Research 2017, 56 (5), 559–568. https://doi.org/10.1080/00218839.2017.1357217
ER  - 
@book{
author = "Ristivojević, Petar and Trifković, Jelena and Stanković, Dalibor and Radoičić, Aleksandra and Manojlović, Dragan D. and Milojković-Opsenica, Dušanka",
year = "2017",
url = "http://cherry.chem.bg.ac.rs/handle/123456789/3032",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Journal of Apicultural Research",
title = "Supplementary data for article : Ristivojević, P.; Trifković, J.; Stanković, D. M.; Radoičić, A.; Manojlović, D.; Milojković- Opsenica, D. Cyclic Voltammetry and UV/Vis Spectroscopy in Combination with Multivariate Data Analysis for the Assessment of Authenticity of Poplar Type Propolis. Journal of Apicultural Research 2017, 56 (5), 559–568. https://doi.org/10.1080/00218839.2017.1357217"
}
Ristivojević, P., Trifković, J., Stanković, D., Radoičić, A., Manojlović, D. D.,& Milojković-Opsenica, D. (2017). Supplementary data for article : Ristivojević, P.; Trifković, J.; Stanković, D. M.; Radoičić, A.; Manojlović, D.; Milojković- Opsenica, D. Cyclic Voltammetry and UV/Vis Spectroscopy in Combination with Multivariate Data Analysis for the Assessment of Authenticity of Poplar Type Propolis. Journal of Apicultural Research 2017, 56 (5), 559–568. https://doi.org/10.1080/00218839.2017.1357217.
Journal of Apicultural Research
Taylor & Francis Ltd, Abingdon..
Ristivojević P, Trifković J, Stanković D, Radoičić A, Manojlović DD, Milojković-Opsenica D. Supplementary data for article : Ristivojević, P.; Trifković, J.; Stanković, D. M.; Radoičić, A.; Manojlović, D.; Milojković- Opsenica, D. Cyclic Voltammetry and UV/Vis Spectroscopy in Combination with Multivariate Data Analysis for the Assessment of Authenticity of Poplar Type Propolis. Journal of Apicultural Research 2017, 56 (5), 559–568. https://doi.org/10.1080/00218839.2017.1357217. Journal of Apicultural Research. 2017;
Ristivojević Petar, Trifković Jelena, Stanković Dalibor, Radoičić Aleksandra, Manojlović Dragan D., Milojković-Opsenica Dušanka, "Supplementary data for article : Ristivojević, P.; Trifković, J.; Stanković, D. M.; Radoičić, A.; Manojlović, D.; Milojković- Opsenica, D. Cyclic Voltammetry and UV/Vis Spectroscopy in Combination with Multivariate Data Analysis for the Assessment of Authenticity of Poplar Type Propolis. Journal of Apicultural Research 2017, 56 (5), 559–568. https://doi.org/10.1080/00218839.2017.1357217" Journal of Apicultural Research (2017)

Cyclic voltammetry and UV/Vis spectroscopy in combination with multivariate data analysis for the assessment of authenticity of poplar type propolis

Ristivojević, Petar; Trifković, Jelena; Stanković, Dalibor; Radoičić, Aleksandra; Manojlović, Dragan D.; Milojković-Opsenica, Dušanka

(Taylor & Francis Ltd, Abingdon, 2017)

TY  - JOUR
AU  - Ristivojević, Petar
AU  - Trifković, Jelena
AU  - Stanković, Dalibor
AU  - Radoičić, Aleksandra
AU  - Manojlović, Dragan D.
AU  - Milojković-Opsenica, Dušanka
PY  - 2017
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/2545
AB  - Propolis, as a beneficial natural product, has found application in the food and pharmaceutical industries as a food preservative, active packaging material as well as a main component of propolis containing products. Quality control of propolis has thus gained in importance. We used simple, fast, and low-cost techniques such as UV/Vis spectrophotometry and cyclic voltammetry applied in combination with principal component analysis to confirm the presence of two botanical sub-types of propolis. Cyclic voltammetry, as a green, sensitive, and convenient technique suitable for investigation of chemical profile, together with multivariate chemometrics technique, was used for the first time for characterization and classification of propolis. UV/Vis spectroscopy was applied in two aspects, absorption at certain wavelength for the quantitative determination of analytes, i.e. determination of quality control parameters, and spectral profiles, for the confirmation of the existence of two botanically different poplar types. All investigated Serbian propolis samples were characterized with specific chemical patterns and were classified in two main botanical varieties, so-called orange and blue. The results confirmed that the applied methods have a potential to be used for the discrimination of complex natural products such as propolis.
PB  - Taylor & Francis Ltd, Abingdon
T2  - Journal of Apicultural Research
T1  - Cyclic voltammetry and UV/Vis spectroscopy in combination with multivariate data analysis for the assessment of authenticity of poplar type propolis
VL  - 56
IS  - 5
SP  - 559
EP  - 568
DO  - 10.1080/00218839.2017.1357217
ER  - 
@article{
author = "Ristivojević, Petar and Trifković, Jelena and Stanković, Dalibor and Radoičić, Aleksandra and Manojlović, Dragan D. and Milojković-Opsenica, Dušanka",
year = "2017",
url = "http://cherry.chem.bg.ac.rs/handle/123456789/2545",
abstract = "Propolis, as a beneficial natural product, has found application in the food and pharmaceutical industries as a food preservative, active packaging material as well as a main component of propolis containing products. Quality control of propolis has thus gained in importance. We used simple, fast, and low-cost techniques such as UV/Vis spectrophotometry and cyclic voltammetry applied in combination with principal component analysis to confirm the presence of two botanical sub-types of propolis. Cyclic voltammetry, as a green, sensitive, and convenient technique suitable for investigation of chemical profile, together with multivariate chemometrics technique, was used for the first time for characterization and classification of propolis. UV/Vis spectroscopy was applied in two aspects, absorption at certain wavelength for the quantitative determination of analytes, i.e. determination of quality control parameters, and spectral profiles, for the confirmation of the existence of two botanically different poplar types. All investigated Serbian propolis samples were characterized with specific chemical patterns and were classified in two main botanical varieties, so-called orange and blue. The results confirmed that the applied methods have a potential to be used for the discrimination of complex natural products such as propolis.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Journal of Apicultural Research",
title = "Cyclic voltammetry and UV/Vis spectroscopy in combination with multivariate data analysis for the assessment of authenticity of poplar type propolis",
volume = "56",
number = "5",
pages = "559-568",
doi = "10.1080/00218839.2017.1357217"
}
Ristivojević, P., Trifković, J., Stanković, D., Radoičić, A., Manojlović, D. D.,& Milojković-Opsenica, D. (2017). Cyclic voltammetry and UV/Vis spectroscopy in combination with multivariate data analysis for the assessment of authenticity of poplar type propolis.
Journal of Apicultural Research
Taylor & Francis Ltd, Abingdon., 56(5), 559-568.
https://doi.org/10.1080/00218839.2017.1357217
Ristivojević P, Trifković J, Stanković D, Radoičić A, Manojlović DD, Milojković-Opsenica D. Cyclic voltammetry and UV/Vis spectroscopy in combination with multivariate data analysis for the assessment of authenticity of poplar type propolis. Journal of Apicultural Research. 2017;56(5):559-568
Ristivojević Petar, Trifković Jelena, Stanković Dalibor, Radoičić Aleksandra, Manojlović Dragan D., Milojković-Opsenica Dušanka, "Cyclic voltammetry and UV/Vis spectroscopy in combination with multivariate data analysis for the assessment of authenticity of poplar type propolis" Journal of Apicultural Research, 56, no. 5 (2017):559-568,
https://doi.org/10.1080/00218839.2017.1357217 .
4
5
5

Development and validation of high-performance thin-layer chromatographic method for determination of amygdalin

Radoičić, Aleksandra; Petronijevic, Radivoj; Andrić, Filip; Tešić, Živoslav Lj.; Milojković-Opsenica, Dušanka

(Taylor & Francis Inc, Philadelphia, 2017)

TY  - JOUR
AU  - Radoičić, Aleksandra
AU  - Petronijevic, Radivoj
AU  - Andrić, Filip
AU  - Tešić, Živoslav Lj.
AU  - Milojković-Opsenica, Dušanka
PY  - 2017
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/2460
AB  - A new method for the extraction and quantitative determination of amygdalin has been proposed. Accelerated solvent extraction was applied for the extraction, and reversed-phase high-performance thin-layer chromatography method was developed, validated, and applied for the determination of amygdalin in the extracts of apricot, plum, almond, and peach kernels. The chromatographic system used was RP-18 silica, as stationary phase and acetonitrile/water (50: 50, v/v), as mobile phase. Densitometric scanning was performed at 210 nm. The method was validated with respect to specificity, linearity, precision, and accuracy. The results showed that the peak area responses were linear within the concentration range of 2.5-50.0 mu g/spot (R-2 = 0.9984). The limit of quantification was 4.28 mu g/spot, and the detection limit 1.28 mu g/spot. The intra-day and inter-day reproducibility, in terms of %RSD, were in the range of 0.81-1.15 and 1.32-1.89, respectively. The accuracy data were in the range from 99.98 to 100.56%. The method is linear, quantitative and reproducible, and could be used as an efficient and economical green chromatographic procedure for the determination of amygdalin in the fruit kernel. [GRAPHICS] .
PB  - Taylor & Francis Inc, Philadelphia
T2  - Journal of Liquid Chromatography and Related Technologies
T1  - Development and validation of high-performance thin-layer chromatographic method for determination of amygdalin
VL  - 40
IS  - 5-6
SP  - 297
EP  - 303
DO  - 10.1080/10826076.2017.1298032
ER  - 
@article{
author = "Radoičić, Aleksandra and Petronijevic, Radivoj and Andrić, Filip and Tešić, Živoslav Lj. and Milojković-Opsenica, Dušanka",
year = "2017",
url = "http://cherry.chem.bg.ac.rs/handle/123456789/2460",
abstract = "A new method for the extraction and quantitative determination of amygdalin has been proposed. Accelerated solvent extraction was applied for the extraction, and reversed-phase high-performance thin-layer chromatography method was developed, validated, and applied for the determination of amygdalin in the extracts of apricot, plum, almond, and peach kernels. The chromatographic system used was RP-18 silica, as stationary phase and acetonitrile/water (50: 50, v/v), as mobile phase. Densitometric scanning was performed at 210 nm. The method was validated with respect to specificity, linearity, precision, and accuracy. The results showed that the peak area responses were linear within the concentration range of 2.5-50.0 mu g/spot (R-2 = 0.9984). The limit of quantification was 4.28 mu g/spot, and the detection limit 1.28 mu g/spot. The intra-day and inter-day reproducibility, in terms of %RSD, were in the range of 0.81-1.15 and 1.32-1.89, respectively. The accuracy data were in the range from 99.98 to 100.56%. The method is linear, quantitative and reproducible, and could be used as an efficient and economical green chromatographic procedure for the determination of amygdalin in the fruit kernel. [GRAPHICS] .",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Journal of Liquid Chromatography and Related Technologies",
title = "Development and validation of high-performance thin-layer chromatographic method for determination of amygdalin",
volume = "40",
number = "5-6",
pages = "297-303",
doi = "10.1080/10826076.2017.1298032"
}
Radoičić, A., Petronijevic, R., Andrić, F., Tešić, Ž. Lj.,& Milojković-Opsenica, D. (2017). Development and validation of high-performance thin-layer chromatographic method for determination of amygdalin.
Journal of Liquid Chromatography and Related Technologies
Taylor & Francis Inc, Philadelphia., 40(5-6), 297-303.
https://doi.org/10.1080/10826076.2017.1298032
Radoičić A, Petronijevic R, Andrić F, Tešić ŽL, Milojković-Opsenica D. Development and validation of high-performance thin-layer chromatographic method for determination of amygdalin. Journal of Liquid Chromatography and Related Technologies. 2017;40(5-6):297-303
Radoičić Aleksandra, Petronijevic Radivoj, Andrić Filip, Tešić Živoslav Lj., Milojković-Opsenica Dušanka, "Development and validation of high-performance thin-layer chromatographic method for determination of amygdalin" Journal of Liquid Chromatography and Related Technologies, 40, no. 5-6 (2017):297-303,
https://doi.org/10.1080/10826076.2017.1298032 .
2

Estimation of Lipophilicity of Some Polyoxygenated Steroids by the Means of Normal-Phase Thin-Layer Chromatography

Tosti, Tomislav; Šegan, Sandra B.; Milić, Dragana; Radoičić, Aleksandra; Tešić, Živoslav Lj.; Milojković-Opsenica, Dušanka

(Taylor & Francis Inc, Philadelphia, 2015)

TY  - JOUR
AU  - Tosti, Tomislav
AU  - Šegan, Sandra B.
AU  - Milić, Dragana
AU  - Radoičić, Aleksandra
AU  - Tešić, Živoslav Lj.
AU  - Milojković-Opsenica, Dušanka
PY  - 2015
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/1706
AB  - Unmodified silica gel in combination with two mobile phases, acetone-n-hexane and acetonitrile-dichloromethane, was used in order to evaluate the capability of normal-phase (NP) chromatography on bare silica gel in estimation of lipophilicity of some polyoxygenated steroids. Soczewinski equation coefficients were employed as a measure of lipophilicity. The R-M(0) values obtained in NP-systems were correlated with those derived by extrapolation from reversed-phase (RP) systems. In addition, retention data, i.e., lipophilicity parameters determined in NP systems were compared with logP values calculated by use of several commercial computer programs. The results showed that chromatographic parameters R-M(0), and m obtained in NP system consisted of silica gel as stationary phase and acetone-n-hexane as mobile phase, are acceptable as the measures of lipophilicity of polyoxygenated steroids. The mechanism of retention was discussed.
PB  - Taylor & Francis Inc, Philadelphia
T2  - Journal of Liquid Chromatography and Related Technologies
T1  - Estimation of Lipophilicity of Some Polyoxygenated Steroids by the Means of Normal-Phase Thin-Layer Chromatography
VL  - 38
IS  - 11
SP  - 1097
EP  - 1103
DO  - 10.1080/10826076.2015.1028287
ER  - 
@article{
author = "Tosti, Tomislav and Šegan, Sandra B. and Milić, Dragana and Radoičić, Aleksandra and Tešić, Živoslav Lj. and Milojković-Opsenica, Dušanka",
year = "2015",
url = "http://cherry.chem.bg.ac.rs/handle/123456789/1706",
abstract = "Unmodified silica gel in combination with two mobile phases, acetone-n-hexane and acetonitrile-dichloromethane, was used in order to evaluate the capability of normal-phase (NP) chromatography on bare silica gel in estimation of lipophilicity of some polyoxygenated steroids. Soczewinski equation coefficients were employed as a measure of lipophilicity. The R-M(0) values obtained in NP-systems were correlated with those derived by extrapolation from reversed-phase (RP) systems. In addition, retention data, i.e., lipophilicity parameters determined in NP systems were compared with logP values calculated by use of several commercial computer programs. The results showed that chromatographic parameters R-M(0), and m obtained in NP system consisted of silica gel as stationary phase and acetone-n-hexane as mobile phase, are acceptable as the measures of lipophilicity of polyoxygenated steroids. The mechanism of retention was discussed.",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Journal of Liquid Chromatography and Related Technologies",
title = "Estimation of Lipophilicity of Some Polyoxygenated Steroids by the Means of Normal-Phase Thin-Layer Chromatography",
volume = "38",
number = "11",
pages = "1097-1103",
doi = "10.1080/10826076.2015.1028287"
}
Tosti, T., Šegan, S. B., Milić, D., Radoičić, A., Tešić, Ž. Lj.,& Milojković-Opsenica, D. (2015). Estimation of Lipophilicity of Some Polyoxygenated Steroids by the Means of Normal-Phase Thin-Layer Chromatography.
Journal of Liquid Chromatography and Related Technologies
Taylor & Francis Inc, Philadelphia., 38(11), 1097-1103.
https://doi.org/10.1080/10826076.2015.1028287
Tosti T, Šegan SB, Milić D, Radoičić A, Tešić ŽL, Milojković-Opsenica D. Estimation of Lipophilicity of Some Polyoxygenated Steroids by the Means of Normal-Phase Thin-Layer Chromatography. Journal of Liquid Chromatography and Related Technologies. 2015;38(11):1097-1103
Tosti Tomislav, Šegan Sandra B., Milić Dragana, Radoičić Aleksandra, Tešić Živoslav Lj., Milojković-Opsenica Dušanka, "Estimation of Lipophilicity of Some Polyoxygenated Steroids by the Means of Normal-Phase Thin-Layer Chromatography" Journal of Liquid Chromatography and Related Technologies, 38, no. 11 (2015):1097-1103,
https://doi.org/10.1080/10826076.2015.1028287 .
7
8
7

3-Cyanopropylsiloxane-Bonded Silica Gel: Characteristics and Applications in Thin-Layer Chromatography

Milojković-Opsenica, Dušanka; Majstorović, Helena; Radoičić, Aleksandra; Tešić, Živoslav Lj.

(Akademiai Kiado Rt, Budapest, 2015)

TY  - JOUR
AU  - Milojković-Opsenica, Dušanka
AU  - Majstorović, Helena
AU  - Radoičić, Aleksandra
AU  - Tešić, Živoslav Lj.
PY  - 2015
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/1686
AB  - An overview of the adsorption characteristics of 3-cyanopropylsiloxane-bonded silica gel as a specific, moderately polar sorbent which can be used for separation of different classes of organic and inorganic substances in both normal- and reversed-phase chromatography is presented. The most important separation mechanisms that govern the retention on this sorbent are underlined. In addition, some recently published applications of 3-cyanopropylsiloxane-bonded silica gel as a sorbent in thin-layer chromatography are listed.
PB  - Akademiai Kiado Rt, Budapest
T2  - Journal of Planar Chromatography: Modern TLC / Thin Layer Chromatography
T1  - 3-Cyanopropylsiloxane-Bonded Silica Gel: Characteristics and Applications in Thin-Layer Chromatography
VL  - 28
IS  - 2
SP  - 106
EP  - 114
DO  - 10.1556/JPC.28.2015.2.4
ER  - 
@article{
author = "Milojković-Opsenica, Dušanka and Majstorović, Helena and Radoičić, Aleksandra and Tešić, Živoslav Lj.",
year = "2015",
url = "http://cherry.chem.bg.ac.rs/handle/123456789/1686",
abstract = "An overview of the adsorption characteristics of 3-cyanopropylsiloxane-bonded silica gel as a specific, moderately polar sorbent which can be used for separation of different classes of organic and inorganic substances in both normal- and reversed-phase chromatography is presented. The most important separation mechanisms that govern the retention on this sorbent are underlined. In addition, some recently published applications of 3-cyanopropylsiloxane-bonded silica gel as a sorbent in thin-layer chromatography are listed.",
publisher = "Akademiai Kiado Rt, Budapest",
journal = "Journal of Planar Chromatography: Modern TLC / Thin Layer Chromatography",
title = "3-Cyanopropylsiloxane-Bonded Silica Gel: Characteristics and Applications in Thin-Layer Chromatography",
volume = "28",
number = "2",
pages = "106-114",
doi = "10.1556/JPC.28.2015.2.4"
}
Milojković-Opsenica, D., Majstorović, H., Radoičić, A.,& Tešić, Ž. Lj. (2015). 3-Cyanopropylsiloxane-Bonded Silica Gel: Characteristics and Applications in Thin-Layer Chromatography.
Journal of Planar Chromatography: Modern TLC / Thin Layer Chromatography
Akademiai Kiado Rt, Budapest., 28(2), 106-114.
https://doi.org/10.1556/JPC.28.2015.2.4
Milojković-Opsenica D, Majstorović H, Radoičić A, Tešić ŽL. 3-Cyanopropylsiloxane-Bonded Silica Gel: Characteristics and Applications in Thin-Layer Chromatography. Journal of Planar Chromatography: Modern TLC / Thin Layer Chromatography. 2015;28(2):106-114
Milojković-Opsenica Dušanka, Majstorović Helena, Radoičić Aleksandra, Tešić Živoslav Lj., "3-Cyanopropylsiloxane-Bonded Silica Gel: Characteristics and Applications in Thin-Layer Chromatography" Journal of Planar Chromatography: Modern TLC / Thin Layer Chromatography, 28, no. 2 (2015):106-114,
https://doi.org/10.1556/JPC.28.2015.2.4 .
1
1
1

Lipophilicity Assessment of Ruthenium(II)-Arene Complexes by the Means of Reversed-Phase Thin-Layer Chromatography and DFT Calculations

Shweshein, Khalil Salem A. M.; Andrić, Filip; Radoičić, Aleksandra; Zlatar, Matija; Gruden-Pavlović, Maja; Tešić, Živoslav Lj.; Milojković-Opsenica, Dušanka

(Hindawi Publishing Corporation, New York, 2014)

TY  - JOUR
AU  - Shweshein, Khalil Salem A. M.
AU  - Andrić, Filip
AU  - Radoičić, Aleksandra
AU  - Zlatar, Matija
AU  - Gruden-Pavlović, Maja
AU  - Tešić, Živoslav Lj.
AU  - Milojković-Opsenica, Dušanka
PY  - 2014
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/1498
AB  - The lipophilicity of ten ruthenium(II)-arene complexes was assessed by reversed-phase thin-layer chromatography (RP-TLC) on octadecyl silica stationary phase. The binary solvent systems composed of water and acetonitrile were used as mobile phase in order to determine chromatographic descriptors for lipophilicity estimation. Octanol-water partition coefficient, logK(OW), of tested complexes was experimentally determined using twenty-eight standard solutes which were analyzed under the same chromatographic conditions as target substances. In addition, ab initio density functional theory (DFT) computational approach was employed to calculate logK(OW) values from the differences in Gibbs' free solvation energies of the solute transfer from n-octanol to water. A good overall agreement between DFT calculated and experimentally determined logK(OW) values was established (R-2 = 0.8024-0.9658).
PB  - Hindawi Publishing Corporation, New York
T2  - Scientific World Journal / TSWJ
T1  - Lipophilicity Assessment of Ruthenium(II)-Arene Complexes by the Means of Reversed-Phase Thin-Layer Chromatography and DFT Calculations
DO  - 10.1155/2014/862796
ER  - 
@article{
author = "Shweshein, Khalil Salem A. M. and Andrić, Filip and Radoičić, Aleksandra and Zlatar, Matija and Gruden-Pavlović, Maja and Tešić, Živoslav Lj. and Milojković-Opsenica, Dušanka",
year = "2014",
url = "http://cherry.chem.bg.ac.rs/handle/123456789/1498",
abstract = "The lipophilicity of ten ruthenium(II)-arene complexes was assessed by reversed-phase thin-layer chromatography (RP-TLC) on octadecyl silica stationary phase. The binary solvent systems composed of water and acetonitrile were used as mobile phase in order to determine chromatographic descriptors for lipophilicity estimation. Octanol-water partition coefficient, logK(OW), of tested complexes was experimentally determined using twenty-eight standard solutes which were analyzed under the same chromatographic conditions as target substances. In addition, ab initio density functional theory (DFT) computational approach was employed to calculate logK(OW) values from the differences in Gibbs' free solvation energies of the solute transfer from n-octanol to water. A good overall agreement between DFT calculated and experimentally determined logK(OW) values was established (R-2 = 0.8024-0.9658).",
publisher = "Hindawi Publishing Corporation, New York",
journal = "Scientific World Journal / TSWJ",
title = "Lipophilicity Assessment of Ruthenium(II)-Arene Complexes by the Means of Reversed-Phase Thin-Layer Chromatography and DFT Calculations",
doi = "10.1155/2014/862796"
}
Shweshein, K. S. A. M., Andrić, F., Radoičić, A., Zlatar, M., Gruden-Pavlović, M., Tešić, Ž. Lj.,& Milojković-Opsenica, D. (2014). Lipophilicity Assessment of Ruthenium(II)-Arene Complexes by the Means of Reversed-Phase Thin-Layer Chromatography and DFT Calculations.
Scientific World Journal / TSWJ
Hindawi Publishing Corporation, New York..
https://doi.org/10.1155/2014/862796
Shweshein KSAM, Andrić F, Radoičić A, Zlatar M, Gruden-Pavlović M, Tešić ŽL, Milojković-Opsenica D. Lipophilicity Assessment of Ruthenium(II)-Arene Complexes by the Means of Reversed-Phase Thin-Layer Chromatography and DFT Calculations. Scientific World Journal / TSWJ. 2014;
Shweshein Khalil Salem A. M., Andrić Filip, Radoičić Aleksandra, Zlatar Matija, Gruden-Pavlović Maja, Tešić Živoslav Lj., Milojković-Opsenica Dušanka, "Lipophilicity Assessment of Ruthenium(II)-Arene Complexes by the Means of Reversed-Phase Thin-Layer Chromatography and DFT Calculations" Scientific World Journal / TSWJ (2014),
https://doi.org/10.1155/2014/862796 .
3
5
5

An appraisal of conventional, microwave and ultrasound BCR extraction methods for the analysis of metals in sediments of Pancevo, Serbia

Relić, Dubravka; Đorđević, Dragana S.; Sakan, Sanja M.; Anđelković, Ivan; Pantelić, A.; Stanković, R.; Radoičić, Aleksandra; Popović, Aleksandar R.

(E D P Sciences, Cedex A, 2013)

TY  - CONF
AU  - Relić, Dubravka
AU  - Đorđević, Dragana S.
AU  - Sakan, Sanja M.
AU  - Anđelković, Ivan
AU  - Pantelić, A.
AU  - Stanković, R.
AU  - Radoičić, Aleksandra
AU  - Popović, Aleksandar R.
PY  - 2013
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/1429
AB  - We use conventional, microwave and ultrasound assisted sequential extraction, of defined time and power, techniques for extractions of Cd, Cu, Cr, Ni, Pb and Zn in sediments and certified material. We did not change the conditions of extractions through steps, cause we what to see is there difference in extraction results for the certified material and sediments. We use lower powers and time from microwave and ultrasound extraction in order to avoid additional heating and boiling of the samples. Steps 1-3 of the BCR (Community Bureau of Reference), excluding the hydrogen peroxide digestion in step 3, were completed in 16 h in the conventional, in 120 s with 90 W power of microwave and in 30 min of 42 kHz of an ultrasonic frequency. Digestion of organic matter with hydrogen peroxide was performed the same for all techniques. The fourth step, the pseudo-total content, was performed the same on samples remaining after performing the extraction of the previous three phases either conventionally, microwave-assisted or with ultrasound. The precision and accuracy of the proposed procedures were evaluated using a certified reference material BCR701. Acceptable accuracy for most of the metals was observed for all three steps of BCR protocol applying a 16 h total shaking period. Metals were determined with an acceptable accuracy after the pseudo-total step; expect Cr. Results obtained after the application of different techniques on sediments were comparable with ANOVA test for the 95 % of confidence level.
PB  - E D P Sciences, Cedex A
C3  - Proceedings of the 16th International Conference on Heavy Metals in the Environment
T1  - An appraisal of conventional, microwave and ultrasound BCR extraction methods for the analysis of metals in sediments of Pancevo, Serbia
VL  - 1
DO  - 10.1051/e3sconf/20130139002
ER  - 
@conference{
author = "Relić, Dubravka and Đorđević, Dragana S. and Sakan, Sanja M. and Anđelković, Ivan and Pantelić, A. and Stanković, R. and Radoičić, Aleksandra and Popović, Aleksandar R.",
year = "2013",
url = "http://cherry.chem.bg.ac.rs/handle/123456789/1429",
abstract = "We use conventional, microwave and ultrasound assisted sequential extraction, of defined time and power, techniques for extractions of Cd, Cu, Cr, Ni, Pb and Zn in sediments and certified material. We did not change the conditions of extractions through steps, cause we what to see is there difference in extraction results for the certified material and sediments. We use lower powers and time from microwave and ultrasound extraction in order to avoid additional heating and boiling of the samples. Steps 1-3 of the BCR (Community Bureau of Reference), excluding the hydrogen peroxide digestion in step 3, were completed in 16 h in the conventional, in 120 s with 90 W power of microwave and in 30 min of 42 kHz of an ultrasonic frequency. Digestion of organic matter with hydrogen peroxide was performed the same for all techniques. The fourth step, the pseudo-total content, was performed the same on samples remaining after performing the extraction of the previous three phases either conventionally, microwave-assisted or with ultrasound. The precision and accuracy of the proposed procedures were evaluated using a certified reference material BCR701. Acceptable accuracy for most of the metals was observed for all three steps of BCR protocol applying a 16 h total shaking period. Metals were determined with an acceptable accuracy after the pseudo-total step; expect Cr. Results obtained after the application of different techniques on sediments were comparable with ANOVA test for the 95 % of confidence level.",
publisher = "E D P Sciences, Cedex A",
journal = "Proceedings of the 16th International Conference on Heavy Metals in the Environment",
title = "An appraisal of conventional, microwave and ultrasound BCR extraction methods for the analysis of metals in sediments of Pancevo, Serbia",
volume = "1",
doi = "10.1051/e3sconf/20130139002"
}
Relić, D., Đorđević, D. S., Sakan, S. M., Anđelković, I., Pantelić, A., Stanković, R., Radoičić, A.,& Popović, A. R. (2013). An appraisal of conventional, microwave and ultrasound BCR extraction methods for the analysis of metals in sediments of Pancevo, Serbia.
Proceedings of the 16th International Conference on Heavy Metals in the Environment
E D P Sciences, Cedex A., 1.
https://doi.org/10.1051/e3sconf/20130139002
Relić D, Đorđević DS, Sakan SM, Anđelković I, Pantelić A, Stanković R, Radoičić A, Popović AR. An appraisal of conventional, microwave and ultrasound BCR extraction methods for the analysis of metals in sediments of Pancevo, Serbia. Proceedings of the 16th International Conference on Heavy Metals in the Environment. 2013;1
Relić Dubravka, Đorđević Dragana S., Sakan Sanja M., Anđelković Ivan, Pantelić A., Stanković R., Radoičić Aleksandra, Popović Aleksandar R., "An appraisal of conventional, microwave and ultrasound BCR extraction methods for the analysis of metals in sediments of Pancevo, Serbia" Proceedings of the 16th International Conference on Heavy Metals in the Environment, 1 (2013),
https://doi.org/10.1051/e3sconf/20130139002 .
2
1
2

An appraisal of conventional, microwave and ultrasound BCR extraction methods for the analysis of metals in sediments of Pančevo, Serbia

Relić, Dubravka; Dordević, D.; Sakan, Sanja M.; Ancrossed d signelković, I.; Pantelić, A.; Stanković, R.; Radoičić, Aleksandra; Popović, Aleksandar R.

(2013)

TY  - CONF
AU  - Relić, Dubravka
AU  - Dordević, D.
AU  - Sakan, Sanja M.
AU  - Ancrossed d signelković, I.
AU  - Pantelić, A.
AU  - Stanković, R.
AU  - Radoičić, Aleksandra
AU  - Popović, Aleksandar R.
PY  - 2013
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/302
AB  - We use conventional, microwave and ultrasound assisted sequential extraction, of defined time and power, techniques for extractions of Cd, Cu, Cr, Ni, Pb and Zn in sediments and certified material. We did not change the conditions of extractions through steps, cause we what to see is there difference in extraction results for the certified material and sediments. We use lower powers and time from microwave and ultrasound extraction in order to avoid additional heating and boiling of the samples. Steps 1-3 of the BCR (Community Bureau of Reference), excluding the hydrogen peroxide digestion in step 3, were completed in 16 h in the conventional, in 120 s with 90 W power of microwave and in 30 min of 42 kHz of an ultrasonic frequency. Digestion of organic matter with hydrogen peroxide was performed the same for all techniques. The fourth step, the pseudo-total content, was performed the same on samples remaining after performing the extraction of the previous three phases either conventionally, microwave-assisted or with ultrasound. The precision and accuracy of the proposed procedures were evaluated using a certified reference material BCR701. Acceptable accuracy for most of the metals was observed for all three steps of BCR protocol applying a 16 h total shaking period. Metals were determined with an acceptable accuracy after the pseudo-total step; expect Cr. Results obtained after the application of different techniques on sediments were comparable with ANOVA test for the 95 % of confidence level.
C3  - E3S Web of Conferences
T1  - An appraisal of conventional, microwave and ultrasound BCR extraction methods for the analysis of metals in sediments of Pančevo, Serbia
VL  - 1
DO  - 10.1051/e3sconf/20130139002
ER  - 
@conference{
author = "Relić, Dubravka and Dordević, D. and Sakan, Sanja M. and Ancrossed d signelković, I. and Pantelić, A. and Stanković, R. and Radoičić, Aleksandra and Popović, Aleksandar R.",
year = "2013",
url = "http://cherry.chem.bg.ac.rs/handle/123456789/302",
abstract = "We use conventional, microwave and ultrasound assisted sequential extraction, of defined time and power, techniques for extractions of Cd, Cu, Cr, Ni, Pb and Zn in sediments and certified material. We did not change the conditions of extractions through steps, cause we what to see is there difference in extraction results for the certified material and sediments. We use lower powers and time from microwave and ultrasound extraction in order to avoid additional heating and boiling of the samples. Steps 1-3 of the BCR (Community Bureau of Reference), excluding the hydrogen peroxide digestion in step 3, were completed in 16 h in the conventional, in 120 s with 90 W power of microwave and in 30 min of 42 kHz of an ultrasonic frequency. Digestion of organic matter with hydrogen peroxide was performed the same for all techniques. The fourth step, the pseudo-total content, was performed the same on samples remaining after performing the extraction of the previous three phases either conventionally, microwave-assisted or with ultrasound. The precision and accuracy of the proposed procedures were evaluated using a certified reference material BCR701. Acceptable accuracy for most of the metals was observed for all three steps of BCR protocol applying a 16 h total shaking period. Metals were determined with an acceptable accuracy after the pseudo-total step; expect Cr. Results obtained after the application of different techniques on sediments were comparable with ANOVA test for the 95 % of confidence level.",
journal = "E3S Web of Conferences",
title = "An appraisal of conventional, microwave and ultrasound BCR extraction methods for the analysis of metals in sediments of Pančevo, Serbia",
volume = "1",
doi = "10.1051/e3sconf/20130139002"
}
Relić, D., Dordević, D., Sakan, S. M., Ancrossed d signelković, I., Pantelić, A., Stanković, R., Radoičić, A.,& Popović, A. R. (2013). An appraisal of conventional, microwave and ultrasound BCR extraction methods for the analysis of metals in sediments of Pančevo, Serbia.
E3S Web of Conferences, 1.
https://doi.org/10.1051/e3sconf/20130139002
Relić D, Dordević D, Sakan SM, Ancrossed d signelković I, Pantelić A, Stanković R, Radoičić A, Popović AR. An appraisal of conventional, microwave and ultrasound BCR extraction methods for the analysis of metals in sediments of Pančevo, Serbia. E3S Web of Conferences. 2013;1
Relić Dubravka, Dordević D., Sakan Sanja M., Ancrossed d signelković I., Pantelić A., Stanković R., Radoičić Aleksandra, Popović Aleksandar R., "An appraisal of conventional, microwave and ultrasound BCR extraction methods for the analysis of metals in sediments of Pančevo, Serbia" E3S Web of Conferences, 1 (2013),
https://doi.org/10.1051/e3sconf/20130139002 .
2
2

Development and Validation of a Tlc Method for the Analysis of Synthetic Food-Stuff Dyes

Vlajkovic, Jelena; Andrić, Filip; Ristivojević, Petar; Radoičić, Aleksandra; Tešić, Živoslav Lj.; Milojković-Opsenica, Dušanka

(Taylor & Francis Inc, Philadelphia, 2013)

TY  - JOUR
AU  - Vlajkovic, Jelena
AU  - Andrić, Filip
AU  - Ristivojević, Petar
AU  - Radoičić, Aleksandra
AU  - Tešić, Živoslav Lj.
AU  - Milojković-Opsenica, Dušanka
PY  - 2013
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/1374
AB  - A novel reversed-phase thin-layer chromatographic (RP-TLC) method was developed for simultaneous determination of ten most commonly used artificial food dyes. The method was validated with respect to specificity, linearity, precision, and accuracy and compared with reversed-phase high performance liquid chromatography (RP-HPLC) method. In the case of TLC method horizontal developing technique was employed using octadecyl-modified silica as a stationary phase and 0.5mol dm(-3) ammonium sulfate in 30% of ethanol-water solution as a mobile phase. HPLC analysis was carried out using XDB-C18 column and gradient of mixture of aqueous ammonium acetate solution (0.1moldm(-3), pH=6.5) and MeOH/ACN (1:1, v/v). Colorants were detected at 450, 500, and 625nm wavelengths. The TLC method proved to be suitable for quantitative determination in relatively wide range of concentrations (20-300ng/band). Satisfactory values of limits of detection and quantitation were established for both techniques, although somewhat higher in the case of TLC, ranging from 2-10ng/band, that is, 3-20ng/band. Both methods can be applied with satisfactory precision and accuracy, with clear advantage of TLC for simultaneous analysis of six samples per hour.
PB  - Taylor & Francis Inc, Philadelphia
T2  - Journal of Liquid Chromatography and Related Technologies
T1  - Development and Validation of a Tlc Method for the Analysis of Synthetic Food-Stuff Dyes
VL  - 36
IS  - 17
SP  - 2476
EP  - 2488
DO  - 10.1080/10826076.2013.790771
ER  - 
@article{
author = "Vlajkovic, Jelena and Andrić, Filip and Ristivojević, Petar and Radoičić, Aleksandra and Tešić, Živoslav Lj. and Milojković-Opsenica, Dušanka",
year = "2013",
url = "http://cherry.chem.bg.ac.rs/handle/123456789/1374",
abstract = "A novel reversed-phase thin-layer chromatographic (RP-TLC) method was developed for simultaneous determination of ten most commonly used artificial food dyes. The method was validated with respect to specificity, linearity, precision, and accuracy and compared with reversed-phase high performance liquid chromatography (RP-HPLC) method. In the case of TLC method horizontal developing technique was employed using octadecyl-modified silica as a stationary phase and 0.5mol dm(-3) ammonium sulfate in 30% of ethanol-water solution as a mobile phase. HPLC analysis was carried out using XDB-C18 column and gradient of mixture of aqueous ammonium acetate solution (0.1moldm(-3), pH=6.5) and MeOH/ACN (1:1, v/v). Colorants were detected at 450, 500, and 625nm wavelengths. The TLC method proved to be suitable for quantitative determination in relatively wide range of concentrations (20-300ng/band). Satisfactory values of limits of detection and quantitation were established for both techniques, although somewhat higher in the case of TLC, ranging from 2-10ng/band, that is, 3-20ng/band. Both methods can be applied with satisfactory precision and accuracy, with clear advantage of TLC for simultaneous analysis of six samples per hour.",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Journal of Liquid Chromatography and Related Technologies",
title = "Development and Validation of a Tlc Method for the Analysis of Synthetic Food-Stuff Dyes",
volume = "36",
number = "17",
pages = "2476-2488",
doi = "10.1080/10826076.2013.790771"
}
Vlajkovic, J., Andrić, F., Ristivojević, P., Radoičić, A., Tešić, Ž. Lj.,& Milojković-Opsenica, D. (2013). Development and Validation of a Tlc Method for the Analysis of Synthetic Food-Stuff Dyes.
Journal of Liquid Chromatography and Related Technologies
Taylor & Francis Inc, Philadelphia., 36(17), 2476-2488.
https://doi.org/10.1080/10826076.2013.790771
Vlajkovic J, Andrić F, Ristivojević P, Radoičić A, Tešić ŽL, Milojković-Opsenica D. Development and Validation of a Tlc Method for the Analysis of Synthetic Food-Stuff Dyes. Journal of Liquid Chromatography and Related Technologies. 2013;36(17):2476-2488
Vlajkovic Jelena, Andrić Filip, Ristivojević Petar, Radoičić Aleksandra, Tešić Živoslav Lj., Milojković-Opsenica Dušanka, "Development and Validation of a Tlc Method for the Analysis of Synthetic Food-Stuff Dyes" Journal of Liquid Chromatography and Related Technologies, 36, no. 17 (2013):2476-2488,
https://doi.org/10.1080/10826076.2013.790771 .
8
8
10

Hydrophilic Interaction Planar Chromatography of Geometrical Isomers of Selected Co(Iii) Complexes

Shweshein, Khalil Salem A. M.; Radoičić, Aleksandra; Andrić, Filip; Tešić, Živoslav Lj.; Milojković-Opsenica, Dušanka

(Taylor & Francis Inc, Philadelphia, 2012)

TY  - JOUR
AU  - Shweshein, Khalil Salem A. M.
AU  - Radoičić, Aleksandra
AU  - Andrić, Filip
AU  - Tešić, Živoslav Lj.
AU  - Milojković-Opsenica, Dušanka
PY  - 2012
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/1312
AB  - The retention behavior of fourteen geometrically isomeric Co(III) complexes: three pairs of neutral facial-meridional (fac-mer) isomers, one pair of cis-trans isomeric complexes of neutral type, and three pairs of cationic cis-trans isomers have been investigated on thin-layer of silica gel. The effect of the composition of the mobile phases consisting of different ratios of water, methanol, and sodium chloride on retention of the complexes has been explored. In the broad range of mobile phase compositions, a successful separation of geometrical isomers was obtained. A retention order of isomeric complexes consistent with the mobile phase composition was found. The best resolution of isomers was achieved by using solvent systems containing 10 % water. On the basis of the results obtained, possible separation mechanisms were considered. Hydrophilic-interaction chromatography was assumed to be the mechanism determining separation in the case of mobile phases containing small amounts of both water and salt.
PB  - Taylor & Francis Inc, Philadelphia
T2  - Journal of Liquid Chromatography and Related Technologies
T1  - Hydrophilic Interaction Planar Chromatography of Geometrical Isomers of Selected Co(Iii) Complexes
VL  - 35
IS  - 10
SP  - 1289
EP  - 1297
DO  - 10.1080/10826076.2012.676882
ER  - 
@article{
author = "Shweshein, Khalil Salem A. M. and Radoičić, Aleksandra and Andrić, Filip and Tešić, Živoslav Lj. and Milojković-Opsenica, Dušanka",
year = "2012",
url = "http://cherry.chem.bg.ac.rs/handle/123456789/1312",
abstract = "The retention behavior of fourteen geometrically isomeric Co(III) complexes: three pairs of neutral facial-meridional (fac-mer) isomers, one pair of cis-trans isomeric complexes of neutral type, and three pairs of cationic cis-trans isomers have been investigated on thin-layer of silica gel. The effect of the composition of the mobile phases consisting of different ratios of water, methanol, and sodium chloride on retention of the complexes has been explored. In the broad range of mobile phase compositions, a successful separation of geometrical isomers was obtained. A retention order of isomeric complexes consistent with the mobile phase composition was found. The best resolution of isomers was achieved by using solvent systems containing 10 % water. On the basis of the results obtained, possible separation mechanisms were considered. Hydrophilic-interaction chromatography was assumed to be the mechanism determining separation in the case of mobile phases containing small amounts of both water and salt.",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Journal of Liquid Chromatography and Related Technologies",
title = "Hydrophilic Interaction Planar Chromatography of Geometrical Isomers of Selected Co(Iii) Complexes",
volume = "35",
number = "10",
pages = "1289-1297",
doi = "10.1080/10826076.2012.676882"
}
Shweshein, K. S. A. M., Radoičić, A., Andrić, F., Tešić, Ž. Lj.,& Milojković-Opsenica, D. (2012). Hydrophilic Interaction Planar Chromatography of Geometrical Isomers of Selected Co(Iii) Complexes.
Journal of Liquid Chromatography and Related Technologies
Taylor & Francis Inc, Philadelphia., 35(10), 1289-1297.
https://doi.org/10.1080/10826076.2012.676882
Shweshein KSAM, Radoičić A, Andrić F, Tešić ŽL, Milojković-Opsenica D. Hydrophilic Interaction Planar Chromatography of Geometrical Isomers of Selected Co(Iii) Complexes. Journal of Liquid Chromatography and Related Technologies. 2012;35(10):1289-1297
Shweshein Khalil Salem A. M., Radoičić Aleksandra, Andrić Filip, Tešić Živoslav Lj., Milojković-Opsenica Dušanka, "Hydrophilic Interaction Planar Chromatography of Geometrical Isomers of Selected Co(Iii) Complexes" Journal of Liquid Chromatography and Related Technologies, 35, no. 10 (2012):1289-1297,
https://doi.org/10.1080/10826076.2012.676882 .
2
1
2

Supplementary data for article: Šegan, S. B.; Andrić, F.; Radoičić, A.; Opsenica, D. M.; Šolaja, B. A.; Zlatović, M.; Milojković-Opsenica, D. Correlation between Structure, Retention and Activity of Cholic Acid Derived Cis-Trans Isomeric Bis-Steroidal Tetraoxanes. Journal of Separation Science 2011, 34 (19), 2659–2667. https://doi.org/10.1002/jssc.201100185

Šegan, Sandra B.; Andrić, Filip; Radoičić, Aleksandra; Opsenica, Dejan M.; Šolaja, Bogdan A.; Zlatović, Mario; Milojković-Opsenica, Dušanka

(Wiley-V C H Verlag Gmbh, Weinheim, 2011)

TY  - BOOK
AU  - Šegan, Sandra B.
AU  - Andrić, Filip
AU  - Radoičić, Aleksandra
AU  - Opsenica, Dejan M.
AU  - Šolaja, Bogdan A.
AU  - Zlatović, Mario
AU  - Milojković-Opsenica, Dušanka
PY  - 2011
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/3590
PB  - Wiley-V C H Verlag Gmbh, Weinheim
T2  - Journal of Separation Science
T1  - Supplementary data for article: Šegan, S. B.; Andrić, F.; Radoičić, A.; Opsenica, D. M.; Šolaja, B. A.; Zlatović, M.; Milojković-Opsenica, D. Correlation between Structure, Retention and Activity of Cholic Acid Derived Cis-Trans Isomeric Bis-Steroidal Tetraoxanes. Journal of Separation Science 2011, 34 (19), 2659–2667. https://doi.org/10.1002/jssc.201100185
ER  - 
@book{
author = "Šegan, Sandra B. and Andrić, Filip and Radoičić, Aleksandra and Opsenica, Dejan M. and Šolaja, Bogdan A. and Zlatović, Mario and Milojković-Opsenica, Dušanka",
year = "2011",
url = "http://cherry.chem.bg.ac.rs/handle/123456789/3590",
publisher = "Wiley-V C H Verlag Gmbh, Weinheim",
journal = "Journal of Separation Science",
title = "Supplementary data for article: Šegan, S. B.; Andrić, F.; Radoičić, A.; Opsenica, D. M.; Šolaja, B. A.; Zlatović, M.; Milojković-Opsenica, D. Correlation between Structure, Retention and Activity of Cholic Acid Derived Cis-Trans Isomeric Bis-Steroidal Tetraoxanes. Journal of Separation Science 2011, 34 (19), 2659–2667. https://doi.org/10.1002/jssc.201100185"
}
Šegan, S. B., Andrić, F., Radoičić, A., Opsenica, D. M., Šolaja, B. A., Zlatović, M.,& Milojković-Opsenica, D. (2011). Supplementary data for article: Šegan, S. B.; Andrić, F.; Radoičić, A.; Opsenica, D. M.; Šolaja, B. A.; Zlatović, M.; Milojković-Opsenica, D. Correlation between Structure, Retention and Activity of Cholic Acid Derived Cis-Trans Isomeric Bis-Steroidal Tetraoxanes. Journal of Separation Science 2011, 34 (19), 2659–2667. https://doi.org/10.1002/jssc.201100185.
Journal of Separation Science
Wiley-V C H Verlag Gmbh, Weinheim..
Šegan SB, Andrić F, Radoičić A, Opsenica DM, Šolaja BA, Zlatović M, Milojković-Opsenica D. Supplementary data for article: Šegan, S. B.; Andrić, F.; Radoičić, A.; Opsenica, D. M.; Šolaja, B. A.; Zlatović, M.; Milojković-Opsenica, D. Correlation between Structure, Retention and Activity of Cholic Acid Derived Cis-Trans Isomeric Bis-Steroidal Tetraoxanes. Journal of Separation Science 2011, 34 (19), 2659–2667. https://doi.org/10.1002/jssc.201100185. Journal of Separation Science. 2011;
Šegan Sandra B., Andrić Filip, Radoičić Aleksandra, Opsenica Dejan M., Šolaja Bogdan A., Zlatović Mario, Milojković-Opsenica Dušanka, "Supplementary data for article: Šegan, S. B.; Andrić, F.; Radoičić, A.; Opsenica, D. M.; Šolaja, B. A.; Zlatović, M.; Milojković-Opsenica, D. Correlation between Structure, Retention and Activity of Cholic Acid Derived Cis-Trans Isomeric Bis-Steroidal Tetraoxanes. Journal of Separation Science 2011, 34 (19), 2659–2667. https://doi.org/10.1002/jssc.201100185" Journal of Separation Science (2011)

Correlation between structure, retention and activity of cholic acid derived cis-trans isomeric bis-steroidal tetraoxanes

Šegan, Sandra B.; Andrić, Filip; Radoičić, Aleksandra; Opsenica, Dejan M.; Šolaja, Bogdan A.; Zlatović, Mario; Milojković-Opsenica, Dušanka

(Wiley-V C H Verlag Gmbh, Weinheim, 2011)

TY  - JOUR
AU  - Šegan, Sandra B.
AU  - Andrić, Filip
AU  - Radoičić, Aleksandra
AU  - Opsenica, Dejan M.
AU  - Šolaja, Bogdan A.
AU  - Zlatović, Mario
AU  - Milojković-Opsenica, Dušanka
PY  - 2011
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/1212
AB  - Both quantitative structure-retention (QSRR) and quantitative structure-activity relationship (QSAR) studies have been performed to correlate the molecular characteristics of seven pairs of cis-trans isomeric bis-steroidal tetraoxanes with their reversed-phase thin-layer chromatography (RPTLC) retention as well as with their antiproliferative activity. 2D and 3D molecular descriptors as whole molecule representations together with retention parameters as well as with biological activity data were subjected to the multivariate statistical analysis (principal component analysis - PCA and hierarchical cluster analysis - HCA) in order to determine the most influential factors governing the retention and activity against human cervix carcinoma (HeLa) and human malignant melanoma (Fem-X) cell lines. Both QSRR and QSAR models were built by means of the partial least-squares (PLS) statistical method. It was found that hydrogen bond donating (HBD), hydrogen bond accepting (HBAcc), hydrophilic surface percentage (%HS) and hydrophilic-lipophilic balance (HLB) exhibit the strongest influence on retention. The most prominent factors affecting antiproliferative activity of the investigated substances are those relating to the size and shape of a molecule such as: connectivity indices, refractivity (Ref), surface area (SA), molecular volume and weight, polarizability (Pol) and those regarding the ability of hydrogen bonding (HB).
PB  - Wiley-V C H Verlag Gmbh, Weinheim
T2  - Journal of Separation Science
T1  - Correlation between structure, retention and activity of cholic acid derived cis-trans isomeric bis-steroidal tetraoxanes
VL  - 34
IS  - 19
SP  - 2659
EP  - 2667
DO  - 10.1002/jssc.201100185
ER  - 
@article{
author = "Šegan, Sandra B. and Andrić, Filip and Radoičić, Aleksandra and Opsenica, Dejan M. and Šolaja, Bogdan A. and Zlatović, Mario and Milojković-Opsenica, Dušanka",
year = "2011",
url = "http://cherry.chem.bg.ac.rs/handle/123456789/1212",
abstract = "Both quantitative structure-retention (QSRR) and quantitative structure-activity relationship (QSAR) studies have been performed to correlate the molecular characteristics of seven pairs of cis-trans isomeric bis-steroidal tetraoxanes with their reversed-phase thin-layer chromatography (RPTLC) retention as well as with their antiproliferative activity. 2D and 3D molecular descriptors as whole molecule representations together with retention parameters as well as with biological activity data were subjected to the multivariate statistical analysis (principal component analysis - PCA and hierarchical cluster analysis - HCA) in order to determine the most influential factors governing the retention and activity against human cervix carcinoma (HeLa) and human malignant melanoma (Fem-X) cell lines. Both QSRR and QSAR models were built by means of the partial least-squares (PLS) statistical method. It was found that hydrogen bond donating (HBD), hydrogen bond accepting (HBAcc), hydrophilic surface percentage (%HS) and hydrophilic-lipophilic balance (HLB) exhibit the strongest influence on retention. The most prominent factors affecting antiproliferative activity of the investigated substances are those relating to the size and shape of a molecule such as: connectivity indices, refractivity (Ref), surface area (SA), molecular volume and weight, polarizability (Pol) and those regarding the ability of hydrogen bonding (HB).",
publisher = "Wiley-V C H Verlag Gmbh, Weinheim",
journal = "Journal of Separation Science",
title = "Correlation between structure, retention and activity of cholic acid derived cis-trans isomeric bis-steroidal tetraoxanes",
volume = "34",
number = "19",
pages = "2659-2667",
doi = "10.1002/jssc.201100185"
}
Šegan, S. B., Andrić, F., Radoičić, A., Opsenica, D. M., Šolaja, B. A., Zlatović, M.,& Milojković-Opsenica, D. (2011). Correlation between structure, retention and activity of cholic acid derived cis-trans isomeric bis-steroidal tetraoxanes.
Journal of Separation Science
Wiley-V C H Verlag Gmbh, Weinheim., 34(19), 2659-2667.
https://doi.org/10.1002/jssc.201100185
Šegan SB, Andrić F, Radoičić A, Opsenica DM, Šolaja BA, Zlatović M, Milojković-Opsenica D. Correlation between structure, retention and activity of cholic acid derived cis-trans isomeric bis-steroidal tetraoxanes. Journal of Separation Science. 2011;34(19):2659-2667
Šegan Sandra B., Andrić Filip, Radoičić Aleksandra, Opsenica Dejan M., Šolaja Bogdan A., Zlatović Mario, Milojković-Opsenica Dušanka, "Correlation between structure, retention and activity of cholic acid derived cis-trans isomeric bis-steroidal tetraoxanes" Journal of Separation Science, 34, no. 19 (2011):2659-2667,
https://doi.org/10.1002/jssc.201100185 .
13
16
17

Determination of the soil-water partition coefficients (log K-OC) of some mono- and poly-substituted phenols by reversed-phase thin-layer chromatography

Andrić, Filip; Trifković, Jelena; Radoičić, Aleksandra; Šegan, Sandra B.; Tešić, Živoslav Lj.; Milojković-Opsenica, Dušanka

(Pergamon-Elsevier Science Ltd, Oxford, 2010)

TY  - JOUR
AU  - Andrić, Filip
AU  - Trifković, Jelena
AU  - Radoičić, Aleksandra
AU  - Šegan, Sandra B.
AU  - Tešić, Živoslav Lj.
AU  - Milojković-Opsenica, Dušanka
PY  - 2010
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/1125
AB  - In order to determine the soil-water partition coefficient for eleven mono- and poly-substituted phenolic compounds, for which there is still no literature data available. the possibility of using thin-layer chromatography (TLC) as a means for rapid and reliable log K-OC estimation was examined A series of chromatographically derived descriptors R-M(0), b, C-0 and PC1 (first principal component), calculated from retention data obtained under reversed-phase conditions, were used for the assessment of models as well as for a direct calibration procedure The final calibration models are discussed with regard to the achieved accuracy and statistical quality, the type of descriptors used and the corresponding chromatographic conditions The estimated log K-OC values of the studied phenols were compared with those obtained by other means (a) the present OECD guideline based on an HPLC technique, (b) the KOCWIN software package, available free of charge from the US Environmental Protection Agency web site and (c) general LSER models established by Nguyen and coworkers, and Poole and coworkers The proposed method showed the best agreement with the results obtained by the OECD procedure, followed by the LSER models of Poole and Nguyen Lower quality correlations were achieved with the KOCWIN calculated values, especially those predicted by molecular connectivity indices. (C) 2010 Elsevier Ltd All rights reserved
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Chemosphere
T1  - Determination of the soil-water partition coefficients (log K-OC) of some mono- and poly-substituted phenols by reversed-phase thin-layer chromatography
VL  - 81
IS  - 3
SP  - 299
EP  - 305
DO  - 10.1016/j.chemosphere.2010.07.049
ER  - 
@article{
author = "Andrić, Filip and Trifković, Jelena and Radoičić, Aleksandra and Šegan, Sandra B. and Tešić, Živoslav Lj. and Milojković-Opsenica, Dušanka",
year = "2010",
url = "http://cherry.chem.bg.ac.rs/handle/123456789/1125",
abstract = "In order to determine the soil-water partition coefficient for eleven mono- and poly-substituted phenolic compounds, for which there is still no literature data available. the possibility of using thin-layer chromatography (TLC) as a means for rapid and reliable log K-OC estimation was examined A series of chromatographically derived descriptors R-M(0), b, C-0 and PC1 (first principal component), calculated from retention data obtained under reversed-phase conditions, were used for the assessment of models as well as for a direct calibration procedure The final calibration models are discussed with regard to the achieved accuracy and statistical quality, the type of descriptors used and the corresponding chromatographic conditions The estimated log K-OC values of the studied phenols were compared with those obtained by other means (a) the present OECD guideline based on an HPLC technique, (b) the KOCWIN software package, available free of charge from the US Environmental Protection Agency web site and (c) general LSER models established by Nguyen and coworkers, and Poole and coworkers The proposed method showed the best agreement with the results obtained by the OECD procedure, followed by the LSER models of Poole and Nguyen Lower quality correlations were achieved with the KOCWIN calculated values, especially those predicted by molecular connectivity indices. (C) 2010 Elsevier Ltd All rights reserved",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Chemosphere",
title = "Determination of the soil-water partition coefficients (log K-OC) of some mono- and poly-substituted phenols by reversed-phase thin-layer chromatography",
volume = "81",
number = "3",
pages = "299-305",
doi = "10.1016/j.chemosphere.2010.07.049"
}
Andrić, F., Trifković, J., Radoičić, A., Šegan, S. B., Tešić, Ž. Lj.,& Milojković-Opsenica, D. (2010). Determination of the soil-water partition coefficients (log K-OC) of some mono- and poly-substituted phenols by reversed-phase thin-layer chromatography.
Chemosphere
Pergamon-Elsevier Science Ltd, Oxford., 81(3), 299-305.
https://doi.org/10.1016/j.chemosphere.2010.07.049
Andrić F, Trifković J, Radoičić A, Šegan SB, Tešić ŽL, Milojković-Opsenica D. Determination of the soil-water partition coefficients (log K-OC) of some mono- and poly-substituted phenols by reversed-phase thin-layer chromatography. Chemosphere. 2010;81(3):299-305
Andrić Filip, Trifković Jelena, Radoičić Aleksandra, Šegan Sandra B., Tešić Živoslav Lj., Milojković-Opsenica Dušanka, "Determination of the soil-water partition coefficients (log K-OC) of some mono- and poly-substituted phenols by reversed-phase thin-layer chromatography" Chemosphere, 81, no. 3 (2010):299-305,
https://doi.org/10.1016/j.chemosphere.2010.07.049 .
13
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Hydrophilic-Interaction Planar Chromatography of Some Water-Soluble Co(III) Complexes on Different Adsorbents

Radoičić, Aleksandra; Majstorović, Helena; Sabo, Tibor; Tešić, Živoslav Lj.; Milojković-Opsenica, Dušanka

(Research Inst Medicinal Plants, Budakalasz, 2009)

TY  - JOUR
AU  - Radoičić, Aleksandra
AU  - Majstorović, Helena
AU  - Sabo, Tibor
AU  - Tešić, Živoslav Lj.
AU  - Milojković-Opsenica, Dušanka
PY  - 2009
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/1011
AB  - The chromatographic behavior of twelve neutral, mixed cobalt(III) complexes of the uns-cis-edda-type has been investigated in six planar chromatographic systems. Four different stationary phases unmodified silica gel, CN-silica, cellulose, and alumina - were combined with water-organic solvent (methanol or acetone) binary mobile phases. The effect of the water content of the mobile phases on retention of the complexes was investigation systematically. On the basis of the results obtained, possible separation mechanisms were considered. Hydrophilic-interaction chromatography was assumed to be the mechanism determining separation tinder normal-phase conditions, i.e. use of mobile phases containing small amounts of water. Reversed-phase chromatography occurs when water-rich mobile phases are used.
PB  - Research Inst Medicinal Plants, Budakalasz
T2  - Journal of Planar Chromatography: Modern TLC / Thin Layer Chromatography
T1  - Hydrophilic-Interaction Planar Chromatography of Some Water-Soluble Co(III) Complexes on Different Adsorbents
VL  - 22
IS  - 4
SP  - 249
EP  - 253
DO  - 10.1556/JPC.22.2009.4.3
ER  - 
@article{
author = "Radoičić, Aleksandra and Majstorović, Helena and Sabo, Tibor and Tešić, Živoslav Lj. and Milojković-Opsenica, Dušanka",
year = "2009",
url = "http://cherry.chem.bg.ac.rs/handle/123456789/1011",
abstract = "The chromatographic behavior of twelve neutral, mixed cobalt(III) complexes of the uns-cis-edda-type has been investigated in six planar chromatographic systems. Four different stationary phases unmodified silica gel, CN-silica, cellulose, and alumina - were combined with water-organic solvent (methanol or acetone) binary mobile phases. The effect of the water content of the mobile phases on retention of the complexes was investigation systematically. On the basis of the results obtained, possible separation mechanisms were considered. Hydrophilic-interaction chromatography was assumed to be the mechanism determining separation tinder normal-phase conditions, i.e. use of mobile phases containing small amounts of water. Reversed-phase chromatography occurs when water-rich mobile phases are used.",
publisher = "Research Inst Medicinal Plants, Budakalasz",
journal = "Journal of Planar Chromatography: Modern TLC / Thin Layer Chromatography",
title = "Hydrophilic-Interaction Planar Chromatography of Some Water-Soluble Co(III) Complexes on Different Adsorbents",
volume = "22",
number = "4",
pages = "249-253",
doi = "10.1556/JPC.22.2009.4.3"
}
Radoičić, A., Majstorović, H., Sabo, T., Tešić, Ž. Lj.,& Milojković-Opsenica, D. (2009). Hydrophilic-Interaction Planar Chromatography of Some Water-Soluble Co(III) Complexes on Different Adsorbents.
Journal of Planar Chromatography: Modern TLC / Thin Layer Chromatography
Research Inst Medicinal Plants, Budakalasz., 22(4), 249-253.
https://doi.org/10.1556/JPC.22.2009.4.3
Radoičić A, Majstorović H, Sabo T, Tešić ŽL, Milojković-Opsenica D. Hydrophilic-Interaction Planar Chromatography of Some Water-Soluble Co(III) Complexes on Different Adsorbents. Journal of Planar Chromatography: Modern TLC / Thin Layer Chromatography. 2009;22(4):249-253
Radoičić Aleksandra, Majstorović Helena, Sabo Tibor, Tešić Živoslav Lj., Milojković-Opsenica Dušanka, "Hydrophilic-Interaction Planar Chromatography of Some Water-Soluble Co(III) Complexes on Different Adsorbents" Journal of Planar Chromatography: Modern TLC / Thin Layer Chromatography, 22, no. 4 (2009):249-253,
https://doi.org/10.1556/JPC.22.2009.4.3 .
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