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Comparison of antioxidants for fats on an equivalent molar basis
Author(s) -
Everson C. W.,
Miller G. J.,
Quackenbush F. W.
Publication year - 1957
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/bf02638026
Subject(s) - catechol , antioxidant , chemistry , molar , molar ratio , substrate (aquarium) , quantitative structure–activity relationship , organic chemistry , stereochemistry , biology , catalysis , paleontology , ecology
Summary An oven incubation method for determining the relative effectiveness of antioxidants is described, which has yielded results with an over‐all average variation of 2.07%. The antioxidants were compared on an equivalent molar basis, and potencies are expressed as a “catechol index”. The catechol index of a given antioxidant is defined as the ratio of its antioxidant activity to that of an equivalent molar concentration of catechol. It provides a quantitative measure of the relative effectiveness of various antioxidants, which takes into consideration the concentration of antioxidant, the induction periods of the stabilized sample and control substrate, and, at least to some extent, the substrate used. Catechol indexes of 28 phenolic compounds are given and discussed, and several relationships between structure and antioxygenic activity are pointed out.