Title : ( Antioxidant Activity of Gallic Acid as Affected by an Extra Carboxyl Group than Pyrogallol in Various Oxidative Environments )
Authors: somayeh alavi rafiee , Reza Farhoosh , Ali Sharif ,
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Abstract
The antioxidant activity of gallic acid and pyrogallol is studied by the DPPH• scavenging assay and the extent of oxidation inhibition of the triacylglycerols of various unsaturated oils (olive, sunflower, and soybean) and their oil-inwater emulsions. The gallic acid molecules with an electron-donating carboxylate anion are significantly stronger DPPH scavengers than pyrogallolmolecules (IC50 = 11.4 vs. 20.2 μM). Regarding the prevention of the triacylglycerols from oxidation, gallic acid is of higher activity than pyrogallol in the bulk oils (86.1–1244.3 vs. 73.4–331.6) but of lower activity in the O/W emulsions (13.0–74.9 vs. 17.4–207.9), depending on their different antioxidant behaviors arisen from the free radical chain mechanism of action as well as interfacial phenomena.
Keywords
, Antioxidant activity, critical micelle concentration, interfacial phenomena, radical chain mechanisms
@article{paperid:1071011,
author = {Alavi Rafiee, Somayeh and Farhoosh, Reza and Sharif, Ali},
title = {Antioxidant Activity of Gallic Acid as Affected by an Extra Carboxyl Group than Pyrogallol in Various Oxidative Environments},
journal = {European Journal of Lipid Science and Technology},
year = {2018},
volume = {120},
number = {11},
month = {November},
issn = {1438-7697},
pages = {1--8},
numpages = {7},
keywords = {Antioxidant activity; critical micelle concentration; interfacial phenomena; radical chain mechanisms},
}
%0 Journal Article
%T Antioxidant Activity of Gallic Acid as Affected by an Extra Carboxyl Group than Pyrogallol in Various Oxidative Environments
%A Alavi Rafiee, Somayeh
%A Farhoosh, Reza
%A Sharif, Ali
%J European Journal of Lipid Science and Technology
%@ 1438-7697
%D 2018
