%0 Journal Article
%T A comparison of methods employed to evaluate antioxidant capabilities
%A DRUSO D PEREZ
%A FEDERICO LEIGHTON
%A ALEXIS ASPEE
%A CAROLINA ALIAGA
%J Biological Research
%D 2000
%I Sociedad de Biolog¨Şa de Chile
%X Thrce ditferent methodologies frequently employed to evaluate the indexes that report the antioxidant capabilities of pure compounds and/or complex mixtures of antioxidants are applied to a series of mono- and polyphenols, as well as to two wine (red and white) samples. These methodologies are based on the bleaching of a stable radical, the effect of the additive upon luminol chemiluminescence induced by peroxyl radicals, and the effect of the additive upon the bleaching of the fluorescence from a dye molecule. Widely ditferent responses are obtained from the different methodologies. These differences are interpreted in terms of the different factors (stoichiametric factors and/or reactivities) that determines the indexes evaluated by these different methodologies
%K ABTS radical bleaching
%K antioxidants
%K c-phycocyanin bleaching
%K total antioxidant reactivity
%K total reactive antioxidant potential
%U http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602000000200006