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Effect of oak acorn extracts on lipide oxidation kinetics

Efikasnost ekstrakata iz hrastovog žira na usporavanje oksidacije lipida

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Rakić, Sveto
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Abstract
This work investigates different extraction techniques by utilizing 95% ethanol and refined sunflower oil as well as the effects of thermal pretreatments on the extraction of antioxidants from oak acorns. Experiments were conducted using oak acorn from Quercus cerris and Quercus robur. Peroxide values measurements and TBA test were used for oxidation rate monitoring. Two types of extracts were prepared: Using dried acorns Using heat-treated acorns - 15 min 210°C. The results indicate that both oil and ethanol extracts have antioxidative properties. Heat treatment did not have adverse effect on antioxidative properties of oak acorn extract.
U radu se daje prikaz različitih tehnika pripreme ekstrakata, koristeći različite rastvarače i predtretman biljnog materijala (u smislu temperature i vremena tretmana jezgra hrastovog žira kao polaznog materijala). Ispitivanja su vršena na uzorcima hrastovog žira Quercus cerris i Quercus robur. Korišćeni rastvarači su 96,5% etanol i jestivo rafinisano suncokretovo ulje. Tok oksidacije praćen je određivanjem peroksidnog broja i ekstincije TBA testom. Pripremani su ekstrakti na bazi osušenog jezgra žira kao i termički tretiran biljni materijal na temperaturi od 210°C tokom 15 minuta. Dobijeni rezultati ukazuju da i uljni i etanolni ekstrakti ispoljavaju antioksidativno dejstvo pod datim uslovima ogleda i da termički tretman jezgra ne dovodi do razgradnje antioksidacione supstance.
Keywords:
acorn / antioxidative activity / extract / oil
Source:
Journal of Agricultural Sciences (Belgrade), 2000, 45, 2, 139-143
Publisher:
  • Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd

ISSN: 1450-8109

[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_agrospace_210
URI
http://aspace.agrif.bg.ac.rs/handle/123456789/210
Collections
  • Radovi istraživača / Researchers’ publications
Institution/Community
Poljoprivredni fakultet
TY  - JOUR
AU  - Rakić, Sveto
PY  - 2000
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/210
AB  - This work investigates different extraction techniques by utilizing 95% ethanol and refined sunflower oil as well as the effects of thermal pretreatments on the extraction of antioxidants from oak acorns. Experiments were conducted using oak acorn from Quercus cerris and Quercus robur. Peroxide values measurements and TBA test were used for oxidation rate monitoring. Two types of extracts were prepared: Using dried acorns Using heat-treated acorns - 15 min 210°C. The results indicate that both oil and ethanol extracts have antioxidative properties. Heat treatment did not have adverse effect on antioxidative properties of oak acorn extract.
AB  - U radu se daje prikaz različitih tehnika pripreme ekstrakata, koristeći različite rastvarače i predtretman biljnog materijala (u smislu temperature i vremena tretmana jezgra hrastovog žira kao polaznog materijala). Ispitivanja su vršena na uzorcima hrastovog žira Quercus cerris i Quercus robur. Korišćeni rastvarači su 96,5% etanol i jestivo rafinisano suncokretovo ulje. Tok oksidacije praćen je određivanjem peroksidnog broja i ekstincije TBA testom. Pripremani su ekstrakti na bazi osušenog jezgra žira kao i termički tretiran biljni materijal na temperaturi od 210°C tokom 15 minuta. Dobijeni rezultati ukazuju da i uljni i etanolni ekstrakti ispoljavaju antioksidativno dejstvo pod datim uslovima ogleda i da termički tretman jezgra ne dovodi do razgradnje antioksidacione supstance.
PB  - Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd
T2  - Journal of Agricultural Sciences (Belgrade)
T1  - Effect of oak acorn extracts on lipide oxidation kinetics
T1  - Efikasnost ekstrakata iz hrastovog žira na usporavanje oksidacije lipida
EP  - 143
IS  - 2
SP  - 139
VL  - 45
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_210
ER  - 
@article{
author = "Rakić, Sveto",
year = "2000",
abstract = "This work investigates different extraction techniques by utilizing 95% ethanol and refined sunflower oil as well as the effects of thermal pretreatments on the extraction of antioxidants from oak acorns. Experiments were conducted using oak acorn from Quercus cerris and Quercus robur. Peroxide values measurements and TBA test were used for oxidation rate monitoring. Two types of extracts were prepared: Using dried acorns Using heat-treated acorns - 15 min 210°C. The results indicate that both oil and ethanol extracts have antioxidative properties. Heat treatment did not have adverse effect on antioxidative properties of oak acorn extract., U radu se daje prikaz različitih tehnika pripreme ekstrakata, koristeći različite rastvarače i predtretman biljnog materijala (u smislu temperature i vremena tretmana jezgra hrastovog žira kao polaznog materijala). Ispitivanja su vršena na uzorcima hrastovog žira Quercus cerris i Quercus robur. Korišćeni rastvarači su 96,5% etanol i jestivo rafinisano suncokretovo ulje. Tok oksidacije praćen je određivanjem peroksidnog broja i ekstincije TBA testom. Pripremani su ekstrakti na bazi osušenog jezgra žira kao i termički tretiran biljni materijal na temperaturi od 210°C tokom 15 minuta. Dobijeni rezultati ukazuju da i uljni i etanolni ekstrakti ispoljavaju antioksidativno dejstvo pod datim uslovima ogleda i da termički tretman jezgra ne dovodi do razgradnje antioksidacione supstance.",
publisher = "Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd",
journal = "Journal of Agricultural Sciences (Belgrade)",
title = "Effect of oak acorn extracts on lipide oxidation kinetics, Efikasnost ekstrakata iz hrastovog žira na usporavanje oksidacije lipida",
pages = "143-139",
number = "2",
volume = "45",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_210"
}
Rakić, S.. (2000). Effect of oak acorn extracts on lipide oxidation kinetics. in Journal of Agricultural Sciences (Belgrade)
Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd., 45(2), 139-143.
https://hdl.handle.net/21.15107/rcub_agrospace_210
Rakić S. Effect of oak acorn extracts on lipide oxidation kinetics. in Journal of Agricultural Sciences (Belgrade). 2000;45(2):139-143.
https://hdl.handle.net/21.15107/rcub_agrospace_210 .
Rakić, Sveto, "Effect of oak acorn extracts on lipide oxidation kinetics" in Journal of Agricultural Sciences (Belgrade), 45, no. 2 (2000):139-143,
https://hdl.handle.net/21.15107/rcub_agrospace_210 .

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