Title : ( Antioxidant activity of gallic acid and methyl gallate in triacylglycerols of Kilka fish oil and its oil-in-water emulsion )
Authors: maryam asnaashari , Reza Farhoosh , Ali Sharif ,
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Abstract
The anti-DPPH radical effect as well as anti-peroxide activity of gallic acid, methyl gallate, and a-ocopherol in a bulk Kilka fish oil and its oil-in-water emulsion stabilized by soy protein isolate at 55 C were investigated. Gallic acid with the lowest hydrophobicity (log P = 0.28) was found to be the most active antiradical agent (IC50 = 29.5 microM), followed by methyl gallate (IC50 = 38.0 microM, log P = 0.23) and atocopherol (IC50 = 105.3 microM, log P = 0.70). The anti-peroxide activity in the bulk oil system decreased in the order of methyl gallate > gallic acid > a-tocopherol. In the emulsion system, methyl gallate still behaved better than gallic acid, but the highest activity belonged to a-tocopherol. Based on the calculation of a number of kinetic parameters, the antioxidants, in general, showed better performances in the bulk oil system than in the emulsion system.
Keywords
, Antioxidat, Emulsion, Gallic acid, Kilka oil, Methyl gallate, Polar paradox
@article{paperid:1040743,
author = {Asnaashari, Maryam and Farhoosh, Reza and Sharif, Ali},
title = {Antioxidant activity of gallic acid and methyl gallate in triacylglycerols of Kilka fish oil and its oil-in-water emulsion},
journal = {Food Chemistry},
year = {2014},
volume = {159},
number = {1},
month = {September},
issn = {0308-8146},
pages = {439--444},
numpages = {5},
keywords = {Antioxidat; Emulsion; Gallic acid; Kilka oil; Methyl gallate; Polar paradox},
}
%0 Journal Article
%T Antioxidant activity of gallic acid and methyl gallate in triacylglycerols of Kilka fish oil and its oil-in-water emulsion
%A Asnaashari, Maryam
%A Farhoosh, Reza
%A Sharif, Ali
%J Food Chemistry
%@ 0308-8146
%D 2014
