TY  - JOUR
AU  - Rakic, S
AU  - Povrenovic, D
AU  - Tešević, Vele
AU  - Simić, Milena R.
AU  - Maletić, Radojka
PY  - 2006
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/755
AB  - In this paper, are presented the results of physical and chemical investigations of differently treated samples of oak acorn. The aim of this investigation is to estimate the influence of thermal treatment on physical and nutritive characteristics of investigated samples. Oak acorn, Quercus robur, (belonging to Fagaceae family) was investigated in native and thermally treated forms. By subsequent extraction of dry toasted oak acorn (Quercus semen tostum) the aqueous extract was obtained which is then dried in a spout-fluid bed. The content of total polyphenols, then polyphenols unadsorbed on hide powder and tannins was determined by spectrophotometric methods with phosphor-wolfram acid according to Ph. Yug. V. Galic acid was determined by HPLC. The total antioxidant activity (TAA) of the aqueous extract compared to the control samples of pigs fat and synthetic antioxidant butylated hydroxyanisole BHA was estimated by Schall-Oven test at 60 +/- 1 degrees C in dark, and oxidative changes were determined by measuring the Peroxide value (PV). For determination of macro- and microelements the method of AAS was used. By detecting the changes of PV it is established that aqueous extract was influencing the stability of pigs fat, that is, showing the antioxidant activity. The activity was increasing with increasing concentration in tested samples. The obtained results regarding the total polyphenols content, the content of galic acid, nitrogen compounds, macro and microelements show that acorn, after treatment, was retaining and in some cases improving its functional properties. (c) 2005 Elsevier Ltd. All rights reserved.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of Food Engineering
T1  - Oak acorn, polyphenols and antioxidant activity in functional food
VL  - 74
IS  - 3
SP  - 416
EP  - 423
DO  - 10.1016/j.jfoodeng.2005.03.057
ER  - 

@article{
author = "Rakic, S and Povrenovic, D and Tešević, Vele and Simić, Milena R. and Maletić, Radojka",
year = "2006",
abstract = "In this paper, are presented the results of physical and chemical investigations of differently treated samples of oak acorn. The aim of this investigation is to estimate the influence of thermal treatment on physical and nutritive characteristics of investigated samples. Oak acorn, Quercus robur, (belonging to Fagaceae family) was investigated in native and thermally treated forms. By subsequent extraction of dry toasted oak acorn (Quercus semen tostum) the aqueous extract was obtained which is then dried in a spout-fluid bed. The content of total polyphenols, then polyphenols unadsorbed on hide powder and tannins was determined by spectrophotometric methods with phosphor-wolfram acid according to Ph. Yug. V. Galic acid was determined by HPLC. The total antioxidant activity (TAA) of the aqueous extract compared to the control samples of pigs fat and synthetic antioxidant butylated hydroxyanisole BHA was estimated by Schall-Oven test at 60 +/- 1 degrees C in dark, and oxidative changes were determined by measuring the Peroxide value (PV). For determination of macro- and microelements the method of AAS was used. By detecting the changes of PV it is established that aqueous extract was influencing the stability of pigs fat, that is, showing the antioxidant activity. The activity was increasing with increasing concentration in tested samples. The obtained results regarding the total polyphenols content, the content of galic acid, nitrogen compounds, macro and microelements show that acorn, after treatment, was retaining and in some cases improving its functional properties. (c) 2005 Elsevier Ltd. All rights reserved.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of Food Engineering",
title = "Oak acorn, polyphenols and antioxidant activity in functional food",
volume = "74",
number = "3",
pages = "416-423",
doi = "10.1016/j.jfoodeng.2005.03.057"
}

Rakic, S., Povrenovic, D., Tešević, V., Simić, M. R.,& Maletić, R.. (2006). Oak acorn, polyphenols and antioxidant activity in functional food. in Journal of Food Engineering
Elsevier Sci Ltd, Oxford., 74(3), 416-423.
https://doi.org/10.1016/j.jfoodeng.2005.03.057

Rakic S, Povrenovic D, Tešević V, Simić MR, Maletić R. Oak acorn, polyphenols and antioxidant activity in functional food. in Journal of Food Engineering. 2006;74(3):416-423.
doi:10.1016/j.jfoodeng.2005.03.057 .

Rakic, S, Povrenovic, D, Tešević, Vele, Simić, Milena R., Maletić, Radojka, "Oak acorn, polyphenols and antioxidant activity in functional food" in Journal of Food Engineering, 74, no. 3 (2006):416-423,
https://doi.org/10.1016/j.jfoodeng.2005.03.057 . .

TY  - JOUR
AU  - Vučinić-Vasić, M.
AU  - Antić, Bratislav
AU  - Blanusa, J
AU  - Rakic, S
AU  - Kremenović, Aleksandar
AU  - Nikolić, Aleksandar S.
AU  - Kapor, A
PY  - 2006
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/743
AB  - Nanosize Li-ferrites were synthesised by the thermal decomposition of an appropriate mixture of complex compounds with acetylacetone - (2,4 pentadione) ligands ([M(AA)(x)]; M = Li and Fe) at 500 degrees C. The obtained sample is composed of three phases determined by the standard Rietveld procedure: Li0.5Fe2.5O4 (S. G. P4(3)32), Li1.16Fe3O4 (S.G. Fd (3) over barm) and LiFeO2 (S.G. Fm (3) over barm). Cation distribution in nanosize ordered spinel Li0.5Fe2.5O4 deviates from that of the bulk counterpart. Microstructure parameters (crystallite size of similar to 23 nm and strain of 3.2526(9) x 10(3)) were determined by the Rietveld refinement of the TCH-pV parameters. SEM microphotographs show a particle size of similar to 50-60 nm. An order disorder phase transition in ordered spinel Li0.5Fe2.5O4 was studied by DSC measurements and in situ XRPD technique. The temperature of phase transition was found to be 762 degrees C ( DSC) and (745 +/- 5) degrees C ( XRPD).
PB  - Springer, New York
T2  - Applied Physics. A: Materials Science and Processing
T1  - Formation of nanosize Li-ferrites from acetylacetonato complexes and their crystal structure, microstructure and order-disorder phase transition
VL  - 82
IS  - 1
SP  - 49
EP  - 54
DO  - 10.1007/s00339-005-3378-y
ER  - 

@article{
author = "Vučinić-Vasić, M. and Antić, Bratislav and Blanusa, J and Rakic, S and Kremenović, Aleksandar and Nikolić, Aleksandar S. and Kapor, A",
year = "2006",
abstract = "Nanosize Li-ferrites were synthesised by the thermal decomposition of an appropriate mixture of complex compounds with acetylacetone - (2,4 pentadione) ligands ([M(AA)(x)]; M = Li and Fe) at 500 degrees C. The obtained sample is composed of three phases determined by the standard Rietveld procedure: Li0.5Fe2.5O4 (S. G. P4(3)32), Li1.16Fe3O4 (S.G. Fd (3) over barm) and LiFeO2 (S.G. Fm (3) over barm). Cation distribution in nanosize ordered spinel Li0.5Fe2.5O4 deviates from that of the bulk counterpart. Microstructure parameters (crystallite size of similar to 23 nm and strain of 3.2526(9) x 10(3)) were determined by the Rietveld refinement of the TCH-pV parameters. SEM microphotographs show a particle size of similar to 50-60 nm. An order disorder phase transition in ordered spinel Li0.5Fe2.5O4 was studied by DSC measurements and in situ XRPD technique. The temperature of phase transition was found to be 762 degrees C ( DSC) and (745 +/- 5) degrees C ( XRPD).",
publisher = "Springer, New York",
journal = "Applied Physics. A: Materials Science and Processing",
title = "Formation of nanosize Li-ferrites from acetylacetonato complexes and their crystal structure, microstructure and order-disorder phase transition",
volume = "82",
number = "1",
pages = "49-54",
doi = "10.1007/s00339-005-3378-y"
}

Vučinić-Vasić, M., Antić, B., Blanusa, J., Rakic, S., Kremenović, A., Nikolić, A. S.,& Kapor, A.. (2006). Formation of nanosize Li-ferrites from acetylacetonato complexes and their crystal structure, microstructure and order-disorder phase transition. in Applied Physics. A: Materials Science and Processing
Springer, New York., 82(1), 49-54.
https://doi.org/10.1007/s00339-005-3378-y

Vučinić-Vasić M, Antić B, Blanusa J, Rakic S, Kremenović A, Nikolić AS, Kapor A. Formation of nanosize Li-ferrites from acetylacetonato complexes and their crystal structure, microstructure and order-disorder phase transition. in Applied Physics. A: Materials Science and Processing. 2006;82(1):49-54.
doi:10.1007/s00339-005-3378-y .

Vučinić-Vasić, M., Antić, Bratislav, Blanusa, J, Rakic, S, Kremenović, Aleksandar, Nikolić, Aleksandar S., Kapor, A, "Formation of nanosize Li-ferrites from acetylacetonato complexes and their crystal structure, microstructure and order-disorder phase transition" in Applied Physics. A: Materials Science and Processing, 82, no. 1 (2006):49-54,
https://doi.org/10.1007/s00339-005-3378-y . .

TY  - JOUR
AU  - Blanusa, J
AU  - Antić, Bratislav
AU  - Nikolić, Aleksandar S.
AU  - Rakic, S
AU  - Jovic, N
AU  - Sreckovic, M
PY  - 2004
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/573
AB  - The ultrafine spinel NiFe1.9M0.1O4 powders (M=Al, Y, Cr, Fe) were synthesized by thermal decomposition of appropriate mixtures of complex compounds with acetylacetone - (2,4 pentadione) ligands ([M(AA)(x)]) at 500 degreesC. Samples were annealed in the temperature range 600-1000 degreesC and the crystallization process was followed by XRD. The largest crystallite size and the highest crystallization rate are observed for NiFe1.9Al0.1O4, while the opposite was found for NiFe1.9Y0.1O4. Strain value in NiFe1.9Y0.1O4 changes sign at temperatures between 700-800 degreesC, while for NiFe1.9M0.1O4 (M=Al, Cr) it has a positive sign and reaches the maximum value at 700 degreesC. The crystal structure of the Samples annealed at 1000 degreesC was refined using the Rietveld profile method. Cation substitution in Ni-ferrite changes its structural and microstructural parameters, and can also significantly influence other physical properties.
PB  - Trans Tech Publications Ltd, Zurich-Uetikon
T2  - Materials Science Forum
T1  - Synthesis and characterization of Al, Y, Co and Cr substituted ultrafine powder of NiFe2O4
SP  - 283
EP  - 286
DO  - 10.4028/www.scientific.net/MSF.443-444.283
ER  - 

@article{
author = "Blanusa, J and Antić, Bratislav and Nikolić, Aleksandar S. and Rakic, S and Jovic, N and Sreckovic, M",
year = "2004",
abstract = "The ultrafine spinel NiFe1.9M0.1O4 powders (M=Al, Y, Cr, Fe) were synthesized by thermal decomposition of appropriate mixtures of complex compounds with acetylacetone - (2,4 pentadione) ligands ([M(AA)(x)]) at 500 degreesC. Samples were annealed in the temperature range 600-1000 degreesC and the crystallization process was followed by XRD. The largest crystallite size and the highest crystallization rate are observed for NiFe1.9Al0.1O4, while the opposite was found for NiFe1.9Y0.1O4. Strain value in NiFe1.9Y0.1O4 changes sign at temperatures between 700-800 degreesC, while for NiFe1.9M0.1O4 (M=Al, Cr) it has a positive sign and reaches the maximum value at 700 degreesC. The crystal structure of the Samples annealed at 1000 degreesC was refined using the Rietveld profile method. Cation substitution in Ni-ferrite changes its structural and microstructural parameters, and can also significantly influence other physical properties.",
publisher = "Trans Tech Publications Ltd, Zurich-Uetikon",
journal = "Materials Science Forum",
title = "Synthesis and characterization of Al, Y, Co and Cr substituted ultrafine powder of NiFe2O4",
pages = "283-286",
doi = "10.4028/www.scientific.net/MSF.443-444.283"
}

Blanusa, J., Antić, B., Nikolić, A. S., Rakic, S., Jovic, N.,& Sreckovic, M.. (2004). Synthesis and characterization of Al, Y, Co and Cr substituted ultrafine powder of NiFe2O4. in Materials Science Forum
Trans Tech Publications Ltd, Zurich-Uetikon., 283-286.
https://doi.org/10.4028/www.scientific.net/MSF.443-444.283

Blanusa J, Antić B, Nikolić AS, Rakic S, Jovic N, Sreckovic M. Synthesis and characterization of Al, Y, Co and Cr substituted ultrafine powder of NiFe2O4. in Materials Science Forum. 2004;:283-286.
doi:10.4028/www.scientific.net/MSF.443-444.283 .

Blanusa, J, Antić, Bratislav, Nikolić, Aleksandar S., Rakic, S, Jovic, N, Sreckovic, M, "Synthesis and characterization of Al, Y, Co and Cr substituted ultrafine powder of NiFe2O4" in Materials Science Forum (2004):283-286,
https://doi.org/10.4028/www.scientific.net/MSF.443-444.283 . .