Maksimović, Jelena

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  • Maksimović, Jelena (1)
  • Maksimović, Jelena D. (1)
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Author's Bibliography

Variations in polyamine conjugates in maize (Zea mays L.) seeds contaminated with aflatoxin B1: a dose–response relationship

Bartolić, Dragana; Maksimović, Vuk; Maksimović, Jelena D.; Stanković, Mira; Krstović, Saša; Baošić, Rada; Radotić, Ksenija

(Wiley, 2020)

TY  - JOUR
AU  - Bartolić, Dragana
AU  - Maksimović, Vuk
AU  - Maksimović, Jelena D.
AU  - Stanković, Mira
AU  - Krstović, Saša
AU  - Baošić, Rada
AU  - Radotić, Ksenija
PY  - 2020
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/3949
AB  - BACKGROUND: Cereal seeds, such as maize seeds, are frequently contaminated with aflatoxin B1 (AFB1), one of the most dangerous naturally occurring carcinogens. In plants, phenolamides are involved in biotic stress response. The data on variations of phenolamides in AFB1-containing seeds are limited. RESULTS: Five polyamine conjugates, including two spermidine and three putrescine conjugates, were tentatively identified in methanolic extracts, using HPLC-DAD-MS. The ratio of putrescine to spermidine conjugates changed with increasing AFB1 concentration in a logistic dose–response manner, with a ratio of below 1 up to a concentration of 51.51 μg kg−1, and approximately 2.54 and 3 at higher concentrations of 177.4 and 308.13 μg kg−1, respectively. The observed variations of the total antioxidant activity and the total phenolic content may support this biphasic behaviour of the seeds against AFB1 stress. CONCLUSIONS: The obtained data are a contribution to the understanding of the roles of polyamine conjugates in seed defence to increasing AFB1 concentrations. According to our knowledge, this study reports for the first time the biphasic response of maize seeds to increasing AFB1 contamination level, comprising the induction of polyamine conjugate accumulation and variation in the ratio of conjugates. This dose–response relationship may provide useful information in the field of agricultural and food chemistry as an indicator of AFB1 contamination level and, hence, for selecting an appropriate seed quality.
PB  - Wiley
T2  - Journal of the Science of Food and Agriculture
T1  - Variations in polyamine conjugates in maize (Zea mays L.) seeds contaminated with aflatoxin B1: a dose–response relationship
VL  - 100
IS  - 7
SP  - 2905
EP  - 2910
DO  - 10.1002/jsfa.10317
ER  - 
@article{
author = "Bartolić, Dragana and Maksimović, Vuk and Maksimović, Jelena D. and Stanković, Mira and Krstović, Saša and Baošić, Rada and Radotić, Ksenija",
year = "2020",
url = "http://cherry.chem.bg.ac.rs/handle/123456789/3949",
abstract = "BACKGROUND: Cereal seeds, such as maize seeds, are frequently contaminated with aflatoxin B1 (AFB1), one of the most dangerous naturally occurring carcinogens. In plants, phenolamides are involved in biotic stress response. The data on variations of phenolamides in AFB1-containing seeds are limited. RESULTS: Five polyamine conjugates, including two spermidine and three putrescine conjugates, were tentatively identified in methanolic extracts, using HPLC-DAD-MS. The ratio of putrescine to spermidine conjugates changed with increasing AFB1 concentration in a logistic dose–response manner, with a ratio of below 1 up to a concentration of 51.51 μg kg−1, and approximately 2.54 and 3 at higher concentrations of 177.4 and 308.13 μg kg−1, respectively. The observed variations of the total antioxidant activity and the total phenolic content may support this biphasic behaviour of the seeds against AFB1 stress. CONCLUSIONS: The obtained data are a contribution to the understanding of the roles of polyamine conjugates in seed defence to increasing AFB1 concentrations. According to our knowledge, this study reports for the first time the biphasic response of maize seeds to increasing AFB1 contamination level, comprising the induction of polyamine conjugate accumulation and variation in the ratio of conjugates. This dose–response relationship may provide useful information in the field of agricultural and food chemistry as an indicator of AFB1 contamination level and, hence, for selecting an appropriate seed quality.",
publisher = "Wiley",
journal = "Journal of the Science of Food and Agriculture",
title = "Variations in polyamine conjugates in maize (Zea mays L.) seeds contaminated with aflatoxin B1: a dose–response relationship",
volume = "100",
number = "7",
pages = "2905-2910",
doi = "10.1002/jsfa.10317"
}
Bartolić, D., Maksimović, V., Maksimović, J. D., Stanković, M., Krstović, S., Baošić, R.,& Radotić, K. (2020). Variations in polyamine conjugates in maize (Zea mays L.) seeds contaminated with aflatoxin B1: a dose–response relationship.
Journal of the Science of Food and Agriculture
Wiley., 100(7), 2905-2910.
https://doi.org/10.1002/jsfa.10317
Bartolić D, Maksimović V, Maksimović JD, Stanković M, Krstović S, Baošić R, Radotić K. Variations in polyamine conjugates in maize (Zea mays L.) seeds contaminated with aflatoxin B1: a dose–response relationship. Journal of the Science of Food and Agriculture. 2020;100(7):2905-2910
Bartolić Dragana, Maksimović Vuk, Maksimović Jelena D., Stanković Mira, Krstović Saša, Baošić Rada, Radotić Ksenija, "Variations in polyamine conjugates in maize (Zea mays L.) seeds contaminated with aflatoxin B1: a dose–response relationship" Journal of the Science of Food and Agriculture, 100, no. 7 (2020):2905-2910,
https://doi.org/10.1002/jsfa.10317 .
2
1

Chemical investigation of miscanthus × giganteus Greef et Deu. Cultivated in Serbia: A potential renewable source of energy

Cvetković, Olga; Pivić, Radmila; Dinić, Zoran; Maksimović, Jelena; Trifunović, Snežana S.; Dželetović, Željko

(2016)

TY  - JOUR
AU  - Cvetković, Olga
AU  - Pivić, Radmila
AU  - Dinić, Zoran
AU  - Maksimović, Jelena
AU  - Trifunović, Snežana S.
AU  - Dželetović, Željko
PY  - 2016
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/168
AB  - According to scientific community and professional specialists, urging necessity to increase capacity of sources of energy can be partially achieved by using biomass as a raw material. This approach is justified by both economic and ecological reasons. In this paper the results of chemical study of the biomass Miscanthus × giganteus Greef et Deu. cultivated in the Republic of Serbia in the experimental field of the Institute for Application of Nuclear Energy in Zemun were presented. Study of an amount of ashes, elemental analysis of the biomass, and calorific value of the biomass (both higher and lower), which are critical parameters when estimating the quality of a biofuel, points out the possibility of utilization of the miscantus biomass as a fuel. Samples of the plant material for this study were collected during two harvesting periods: in the fall, when the biological yield is the highest, and at the end of the winter, when a highest quality biomass with respect to the combustion is obtained do to a decrease in moisture content and remobilization of the macro- and micronutrients from the above-ground parts of the plants to the rhizomes. Values of the studied parameters indicate that biomass meets the 'green' energy requirements because the amounts of oxides of nitrogen and sulphur in the combustion products would not threaten current quality of the environment and the amount of carbon dioxide produced would be consumed in the process of photosynthesis. Results of the chemical analyses strongly suggest to a high potential of utilization of the miscantus biomass as a biofuel (renewable source of energy) to generate thermal energy.
AB  - Delimičan odgovor stručne i naučne javnosti na pitanje kako povećati kapacitete energetskih izvora je upotreba biomase kao sirovine, kako iz ekonomskih, tako i iz ekoloških razloga. U ovom radu su prikazani rezultati fizičko-hemijskih ispitivanja biomase miskantusa (Miscanthus × giganteus Greef et Deu.), gajenog na teritoriji Republike Srbije, oglednom polju Instituta za primenu nuklearne energije, Zemun. Ispitivanjem količine pepela, elementarnog sastava biomase i kalorične vrednosti biomase (donje i gornje), koji su presudni za procenu kvaliteta biogoriva, ukazano je na mogućnost eksploatacije biomase miskantusa kao biogoriva. Prikupljanje uzoraka biljnog materijala za ovo istraživanje izvršeno je u dva žetvena roka: u jesen - vreme maksimuma biološkog prinosa i krajem zime, kada se dobija kvalitetnija biomasa za sagorevanje usled smanjenja sadržaja vlage i remobilizacije makro- i mikrohraniva iz nadzemnih delova rizoma. Vrednosti ispitivanih parametara pokazuju da biomasa ispunjava zahteve 'zelene' energije, jer produkti sagorevanja biomase svojom količinom (oksidi N i S) ne bi ugrožavali postojeći kvalitet životne sredine, a količina nastalog ugljenik (IV) - oksida ne bi predstavljala ekološki problem, jer bi se dalje uključila u proces fotosinteze. Rezultati hemijskih analiza argumentovano ukazuju na veliki potencijal upotrebe biomase miskantusa kao biogoriva (obnovljivog izvora energije) u proizvodnji toplotne energije.
T2  - Zaštita materijala
T1  - Chemical investigation of miscanthus × giganteus Greef et Deu. Cultivated in Serbia: A potential renewable source of energy
T1  - Hemijska ispitivanja miskantusa gajenog u Srbiji - potencijalni obnovljiv izvor energije
VL  - 57
IS  - 3
SP  - 412
EP  - 417
DO  - 10.5937/ZasMat1603412C
ER  - 
@article{
author = "Cvetković, Olga and Pivić, Radmila and Dinić, Zoran and Maksimović, Jelena and Trifunović, Snežana S. and Dželetović, Željko",
year = "2016",
url = "http://cherry.chem.bg.ac.rs/handle/123456789/168",
abstract = "According to scientific community and professional specialists, urging necessity to increase capacity of sources of energy can be partially achieved by using biomass as a raw material. This approach is justified by both economic and ecological reasons. In this paper the results of chemical study of the biomass Miscanthus × giganteus Greef et Deu. cultivated in the Republic of Serbia in the experimental field of the Institute for Application of Nuclear Energy in Zemun were presented. Study of an amount of ashes, elemental analysis of the biomass, and calorific value of the biomass (both higher and lower), which are critical parameters when estimating the quality of a biofuel, points out the possibility of utilization of the miscantus biomass as a fuel. Samples of the plant material for this study were collected during two harvesting periods: in the fall, when the biological yield is the highest, and at the end of the winter, when a highest quality biomass with respect to the combustion is obtained do to a decrease in moisture content and remobilization of the macro- and micronutrients from the above-ground parts of the plants to the rhizomes. Values of the studied parameters indicate that biomass meets the 'green' energy requirements because the amounts of oxides of nitrogen and sulphur in the combustion products would not threaten current quality of the environment and the amount of carbon dioxide produced would be consumed in the process of photosynthesis. Results of the chemical analyses strongly suggest to a high potential of utilization of the miscantus biomass as a biofuel (renewable source of energy) to generate thermal energy., Delimičan odgovor stručne i naučne javnosti na pitanje kako povećati kapacitete energetskih izvora je upotreba biomase kao sirovine, kako iz ekonomskih, tako i iz ekoloških razloga. U ovom radu su prikazani rezultati fizičko-hemijskih ispitivanja biomase miskantusa (Miscanthus × giganteus Greef et Deu.), gajenog na teritoriji Republike Srbije, oglednom polju Instituta za primenu nuklearne energije, Zemun. Ispitivanjem količine pepela, elementarnog sastava biomase i kalorične vrednosti biomase (donje i gornje), koji su presudni za procenu kvaliteta biogoriva, ukazano je na mogućnost eksploatacije biomase miskantusa kao biogoriva. Prikupljanje uzoraka biljnog materijala za ovo istraživanje izvršeno je u dva žetvena roka: u jesen - vreme maksimuma biološkog prinosa i krajem zime, kada se dobija kvalitetnija biomasa za sagorevanje usled smanjenja sadržaja vlage i remobilizacije makro- i mikrohraniva iz nadzemnih delova rizoma. Vrednosti ispitivanih parametara pokazuju da biomasa ispunjava zahteve 'zelene' energije, jer produkti sagorevanja biomase svojom količinom (oksidi N i S) ne bi ugrožavali postojeći kvalitet životne sredine, a količina nastalog ugljenik (IV) - oksida ne bi predstavljala ekološki problem, jer bi se dalje uključila u proces fotosinteze. Rezultati hemijskih analiza argumentovano ukazuju na veliki potencijal upotrebe biomase miskantusa kao biogoriva (obnovljivog izvora energije) u proizvodnji toplotne energije.",
journal = "Zaštita materijala",
title = "Chemical investigation of miscanthus × giganteus Greef et Deu. Cultivated in Serbia: A potential renewable source of energy, Hemijska ispitivanja miskantusa gajenog u Srbiji - potencijalni obnovljiv izvor energije",
volume = "57",
number = "3",
pages = "412-417",
doi = "10.5937/ZasMat1603412C"
}
Cvetković, O., Pivić, R., Dinić, Z., Maksimović, J., Trifunović, S. S.,& Dželetović, Ž. (2016). Hemijska ispitivanja miskantusa gajenog u Srbiji - potencijalni obnovljiv izvor energije.
Zaštita materijala, 57(3), 412-417.
https://doi.org/10.5937/ZasMat1603412C
Cvetković O, Pivić R, Dinić Z, Maksimović J, Trifunović SS, Dželetović Ž. Hemijska ispitivanja miskantusa gajenog u Srbiji - potencijalni obnovljiv izvor energije. Zaštita materijala. 2016;57(3):412-417
Cvetković Olga, Pivić Radmila, Dinić Zoran, Maksimović Jelena, Trifunović Snežana S., Dželetović Željko, "Hemijska ispitivanja miskantusa gajenog u Srbiji - potencijalni obnovljiv izvor energije" Zaštita materijala, 57, no. 3 (2016):412-417,
https://doi.org/10.5937/ZasMat1603412C .
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