TY  - JOUR
AU  - Rabrenović, Biljana
AU  - Dimić, Etelka
AU  - Maksimović, Milan
AU  - Šobajić, Sladjana
AU  - Gajić-Krstajić, Ljiljana
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2718
AB  - RABRENOVIC B., DIMIC E., MAKSIMOVIC M., SOBAJIC S., GAJIC-KRSTAJIC L. (2011): Determination of fatty acid and tocopherol compositions and the oxidative stability of walnut (Juglans regia L.) cultivars grown in Serbia. Czech J. Food Sci., 29: 74-78. Five cultivars (Sampion, Jupiter, Sejnovo, Elit, and Geisenheim 139) of walnuts ( Juglans regia L.) were collected during the 2008 harvest, from Cacak, Central Serbia. Two techniques of oil extraction were implemented - cold pressing and organic solvent extraction. The influence of the implemented methods on the fatty acid composition, tocopherol content as well as oxidative stability was examined. Predominant fatty acids were palmitic, oleic, linoleic, and linolenic acids. The oleic acid content of the oils ranged from 15.9-23.7% of the total fatty acids, while the linoleic acid content ranged from 57.2-65.1% and that of linolenic acid from 9.1-13.6%. The process of oil extraction had no significant effect on the content and composition of fatty acids in the oil. The total content of tocopherols ranged from 28.40 mg/100 g to 42.40 mg/100 g of the extracted oil. The most common tocopherol in all samples was gamma-tocopherol. The oil extracted using the Soxhlet method contained higher amounts of total tocopherols while the stability of the oil samples, expresed as induction period, ranged from 5.0 h to 7.1 hours. Reduced stability of the oil samples as measured by the Rancimat method was negatively correlated with the level of linolenic acid and total content of tocopherols.
PB  - Czech Academy Agricultural Sciences, Prague
T2  - Czech Journal of Food Sciences
T1  - Determination of Fatty Acid and Tocopherol Compositions and the Oxidative Stability of Walnut (Juglans regia L.) Cultivars Grown in Serbia
EP  - 78
IS  - 1
SP  - 74
VL  - 29
DO  - 10.17221/180/2010-CJFS
ER  - 

@article{
author = "Rabrenović, Biljana and Dimić, Etelka and Maksimović, Milan and Šobajić, Sladjana and Gajić-Krstajić, Ljiljana",
year = "2011",
abstract = "RABRENOVIC B., DIMIC E., MAKSIMOVIC M., SOBAJIC S., GAJIC-KRSTAJIC L. (2011): Determination of fatty acid and tocopherol compositions and the oxidative stability of walnut (Juglans regia L.) cultivars grown in Serbia. Czech J. Food Sci., 29: 74-78. Five cultivars (Sampion, Jupiter, Sejnovo, Elit, and Geisenheim 139) of walnuts ( Juglans regia L.) were collected during the 2008 harvest, from Cacak, Central Serbia. Two techniques of oil extraction were implemented - cold pressing and organic solvent extraction. The influence of the implemented methods on the fatty acid composition, tocopherol content as well as oxidative stability was examined. Predominant fatty acids were palmitic, oleic, linoleic, and linolenic acids. The oleic acid content of the oils ranged from 15.9-23.7% of the total fatty acids, while the linoleic acid content ranged from 57.2-65.1% and that of linolenic acid from 9.1-13.6%. The process of oil extraction had no significant effect on the content and composition of fatty acids in the oil. The total content of tocopherols ranged from 28.40 mg/100 g to 42.40 mg/100 g of the extracted oil. The most common tocopherol in all samples was gamma-tocopherol. The oil extracted using the Soxhlet method contained higher amounts of total tocopherols while the stability of the oil samples, expresed as induction period, ranged from 5.0 h to 7.1 hours. Reduced stability of the oil samples as measured by the Rancimat method was negatively correlated with the level of linolenic acid and total content of tocopherols.",
publisher = "Czech Academy Agricultural Sciences, Prague",
journal = "Czech Journal of Food Sciences",
title = "Determination of Fatty Acid and Tocopherol Compositions and the Oxidative Stability of Walnut (Juglans regia L.) Cultivars Grown in Serbia",
pages = "78-74",
number = "1",
volume = "29",
doi = "10.17221/180/2010-CJFS"
}

Rabrenović, B., Dimić, E., Maksimović, M., Šobajić, S.,& Gajić-Krstajić, L.. (2011). Determination of Fatty Acid and Tocopherol Compositions and the Oxidative Stability of Walnut (Juglans regia L.) Cultivars Grown in Serbia. in Czech Journal of Food Sciences
Czech Academy Agricultural Sciences, Prague., 29(1), 74-78.
https://doi.org/10.17221/180/2010-CJFS

Rabrenović B, Dimić E, Maksimović M, Šobajić S, Gajić-Krstajić L. Determination of Fatty Acid and Tocopherol Compositions and the Oxidative Stability of Walnut (Juglans regia L.) Cultivars Grown in Serbia. in Czech Journal of Food Sciences. 2011;29(1):74-78.
doi:10.17221/180/2010-CJFS .

Rabrenović, Biljana, Dimić, Etelka, Maksimović, Milan, Šobajić, Sladjana, Gajić-Krstajić, Ljiljana, "Determination of Fatty Acid and Tocopherol Compositions and the Oxidative Stability of Walnut (Juglans regia L.) Cultivars Grown in Serbia" in Czech Journal of Food Sciences, 29, no. 1 (2011):74-78,
https://doi.org/10.17221/180/2010-CJFS . .

TY  - JOUR
AU  - Rabrenović, Biljana
AU  - Gajić-Krstajić, Ljiljana
PY  - 2010
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2259
AB  - The aim of this work was separation and determination of oil from the cultivar Šampion. Two techniques of oil extraction were employed: cold pressing and organic solvent extraction. Composition of walnut kernels and basic physico-chemical parameters of walnut oil were determined, respectively. The oil content was 69.07%. The fatty acid composition was determined by gas chromatography and the main components were as follows: linoleic acid 58.0%, oleic acid 20.7% and linolenic acid 9.8% for sample obtained by cold pressing and 60.9%, 19.0%, 13.6%, respectively, for sample obtained by solvent extraction.
AB  - Danas se u svetu sve više pažnje posvećuje očuvanju prirodne i zdrave hrane. Zbog određenih zdravstvenih poremećaja i rizika, uslovljenih pre svega neadekvatnom ishranom, aktuelni svetski trendovi neminovno nameću novi koncept razvoja i u tehnologiji jestivih ulja. Povoljni zdravstveni efekti se pripisuju većem broju lipidnih supstanci, pri čemu se najveći broj radova i istraživanja odnosi na esencijalne masne kiseline, posebno one iz ω-3 i ω-6 serije, konjugovanu linolnu kiselinu, zatim fosfolipide, biljne sterole, prirodne antioksidanse i druge sastojke. Ulje oraha se odlikuje visokim sadržajem ω-6 i ω-3 esencijalnih masnih kiselina, što utiče na njegovu visoku nutritivnu vrednost. Upotreba orahovog ulja ima značajnu preventivnu ulogu u modifikaciji lipoproteinskog profila i zaštitnu ulogu kod kardiovaskularnih oboljenja i kancera. Istraživanja u ovom radu su imala za cilj da se uradi karakterizacija ulja oraha domaće sorte Šampion (Centar za voćarstvo, Čačak) i ispita uticaj postupka izdvajanja ulja na sadržaj esencijalnih masnih kiselina. Izdvojeno je ulje iz jezgra oraha domaće sorte Šampion primenom dve tehnike: hladno ceđenje i ekstrakcija organskim rastvaračem. Određeni su sastav i hemijske karakteristike jezgra oraha kao i fizičko-hemijske karakteristike izdvojenog ulja. Sadržaj ulja je iznosio 69.07%. Sastav i sadržaj masnih kiselina je određen metodom gasne hromatografije. Dominantne masne kiseline su: linolna sa sadržajem od 58.0%, zatim oleinska sa sadržajem od 20.7% i linolenska 9.8% u ulju dobijenom hladnim ceđenjem, odnosno 60.9%, 19.0%, 8.7% u ulju dobijenom ekstrakcijom organskim rastvaračem.
PB  - Univerzitet u Kragujevcu - Agronomski fakultet, Čačak
T2  - Acta agriculturae Serbica
T1  - Determination of physico-chemical characteristics of walnut (Juglans regia L.) oil from cultivar Šampion
T1  - Određivanje fizičko-hemijskih karakteristika ulja oraha (Juglans regia L.) sorte Šampion
EP  - 94
IS  - 29
SP  - 89
VL  - 15
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_2259
ER  - 

@article{
author = "Rabrenović, Biljana and Gajić-Krstajić, Ljiljana",
year = "2010",
abstract = "The aim of this work was separation and determination of oil from the cultivar Šampion. Two techniques of oil extraction were employed: cold pressing and organic solvent extraction. Composition of walnut kernels and basic physico-chemical parameters of walnut oil were determined, respectively. The oil content was 69.07%. The fatty acid composition was determined by gas chromatography and the main components were as follows: linoleic acid 58.0%, oleic acid 20.7% and linolenic acid 9.8% for sample obtained by cold pressing and 60.9%, 19.0%, 13.6%, respectively, for sample obtained by solvent extraction., Danas se u svetu sve više pažnje posvećuje očuvanju prirodne i zdrave hrane. Zbog određenih zdravstvenih poremećaja i rizika, uslovljenih pre svega neadekvatnom ishranom, aktuelni svetski trendovi neminovno nameću novi koncept razvoja i u tehnologiji jestivih ulja. Povoljni zdravstveni efekti se pripisuju većem broju lipidnih supstanci, pri čemu se najveći broj radova i istraživanja odnosi na esencijalne masne kiseline, posebno one iz ω-3 i ω-6 serije, konjugovanu linolnu kiselinu, zatim fosfolipide, biljne sterole, prirodne antioksidanse i druge sastojke. Ulje oraha se odlikuje visokim sadržajem ω-6 i ω-3 esencijalnih masnih kiselina, što utiče na njegovu visoku nutritivnu vrednost. Upotreba orahovog ulja ima značajnu preventivnu ulogu u modifikaciji lipoproteinskog profila i zaštitnu ulogu kod kardiovaskularnih oboljenja i kancera. Istraživanja u ovom radu su imala za cilj da se uradi karakterizacija ulja oraha domaće sorte Šampion (Centar za voćarstvo, Čačak) i ispita uticaj postupka izdvajanja ulja na sadržaj esencijalnih masnih kiselina. Izdvojeno je ulje iz jezgra oraha domaće sorte Šampion primenom dve tehnike: hladno ceđenje i ekstrakcija organskim rastvaračem. Određeni su sastav i hemijske karakteristike jezgra oraha kao i fizičko-hemijske karakteristike izdvojenog ulja. Sadržaj ulja je iznosio 69.07%. Sastav i sadržaj masnih kiselina je određen metodom gasne hromatografije. Dominantne masne kiseline su: linolna sa sadržajem od 58.0%, zatim oleinska sa sadržajem od 20.7% i linolenska 9.8% u ulju dobijenom hladnim ceđenjem, odnosno 60.9%, 19.0%, 8.7% u ulju dobijenom ekstrakcijom organskim rastvaračem.",
publisher = "Univerzitet u Kragujevcu - Agronomski fakultet, Čačak",
journal = "Acta agriculturae Serbica",
title = "Determination of physico-chemical characteristics of walnut (Juglans regia L.) oil from cultivar Šampion, Određivanje fizičko-hemijskih karakteristika ulja oraha (Juglans regia L.) sorte Šampion",
pages = "94-89",
number = "29",
volume = "15",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_2259"
}

Rabrenović, B.,& Gajić-Krstajić, L.. (2010). Determination of physico-chemical characteristics of walnut (Juglans regia L.) oil from cultivar Šampion. in Acta agriculturae Serbica
Univerzitet u Kragujevcu - Agronomski fakultet, Čačak., 15(29), 89-94.
https://hdl.handle.net/21.15107/rcub_agrospace_2259

Rabrenović B, Gajić-Krstajić L. Determination of physico-chemical characteristics of walnut (Juglans regia L.) oil from cultivar Šampion. in Acta agriculturae Serbica. 2010;15(29):89-94.
https://hdl.handle.net/21.15107/rcub_agrospace_2259 .

Rabrenović, Biljana, Gajić-Krstajić, Ljiljana, "Determination of physico-chemical characteristics of walnut (Juglans regia L.) oil from cultivar Šampion" in Acta agriculturae Serbica, 15, no. 29 (2010):89-94,
https://hdl.handle.net/21.15107/rcub_agrospace_2259 .