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Evaluation of antioxidant activity: II. application of a heme‐ Catalyzed system
Author(s) -
Rogstad Astri
Publication year - 1980
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/bf02673936
Subject(s) - propyl gallate , chemistry , antioxidant , linoleic acid , catalysis , ethoxyquin , hemoglobin , gallate , tocopherol , incubation , biochemistry , emulsion , azelaic acid , chromatography , organic chemistry , fatty acid , vitamin e , nuclear chemistry
A study was made of the inhibitory effect of the antioxidants propyl gallate, tert ‐butylated hydroxyanisol, α‐tocopherol and ethoxyquin on the hemoglobin‐catalyzed oxygenation of linoleic acid. The concentration of unchanged fatty acid after varying incubation periods and at varying concentrations of antioxidant was measured by gas chromatography. The effect of the antioxidants is compared with results obtained previously from the lipoxygenase‐catalyzed oxidation of a linoleic acid emulsion. It is concluded that all 4 antioxidants are good inhibitors of fatty acid oxidation cata‐lyzed by hemoglobin.