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Kinetics of inhibited oxidation of lipids in the presence of 1‐octadecanol and 1‐palmitoylglycerol
Author(s) -
Kortenska Vessela D.,
Yanishlieva Nedjalka Vl.,
Roginskii Vitalii A.
Publication year - 1991
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02660609
Subject(s) - kinetics , chemistry , hydrogen bond , reaction rate constant , molecule , medicinal chemistry , sunflower oil , organic chemistry , biochemistry , physics , quantum mechanics
The kinetics of initiated oxidation of sunflower oil methyl esters at 50°C in the presence of the phenolic inhibitor p ‐methoxyphenol are investigated. It is established that addition of 0.1 M 1‐octadecanol and of 0.1 M 1‐palmitoylglycerol leads to a 1.5‐ or 2.3‐fold decrease of the rate constant of chain termination on the inhibitor, which proves the blocking of its effect due to the formation of a complex based on a hydrogen bond. The stronger effect of 1‐palmitoylglycerol is explained by the presence of two hydroxyl groups in its molecule.