NDLI: Aldehydes from Oxidized Lipids Can React with 2,2-Diphenyl-1-Picrylhydrazyl (DPPH) Free Radicals in Isooctane Systems

Content Provider	Springer Nature Link
Author	Jeong, Min Kyu Yeo, JuDong Jang, Eun Yeong Kim, Mi Ja Lee, JaeHwan
Copyright Year	2012
Abstract	Oxidized lipids can decrease the absorbance of 2,2-diphenyl-1-picrylhydrazyl (DPPH) in isooctane. However, the compounds responsible for the decrease in DPPH absorbance are still not known. Major factors and possible compounds decreasing the DPPH absorbance during lipid oxidation were identified using linoleic and oleic acid model systems. Changes in the hydroperoxides and conjugated dienoic acid value in thermally oxidized linoleic acid were not highly correlated with those of DPPH absorbance under air-tight and nitrogen flushing conditions. Radical scavenging compounds from oxidized oleic acid were tentatively identified as mixtures of aldehydes, alcohols, and acids. Aldehydes from oxidized fatty acids including pentanal, t-2-heptenal and t-2-nonenal can react with DPPH, whereas most alcohols and hydrocarbons did not show DPPH scavenging activity. Aldehydes rather than conjugated dienes and hydroperoxides may be the radical scavenging compounds from oxidized lipids. The results of this study will help to understand better the changes in oxidation products during lipid oxidation.
Starting Page	1831
Ending Page	1838
Page Count	8
File Format	PDF
ISSN	0003021X
Journal	Journal of the American Oil Chemists' Society
Volume Number	89
Issue Number	10
e-ISSN	15589331
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-05-26
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Aldehydes Hydroperoxides DPPH absorbance Linoleic acid Oleic acid Radical scavenging compounds Agriculture Food Science Industrial Chemistry/Chemical Engineering Biomaterials Biotechnology
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Chemical Engineering

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