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Provedor de dados:  Biol. Res.
País:  Chile
Título:  A comparison of methods employed to evaluate antioxidant capabilities
Autores:  PEREZ,DRUSO D
LEIGHTON,FEDERICO
ASPEE,ALEXIS
ALIAGA,CAROLINA
LISSI,EDUARDO
Data:  2000-01-01
Ano:  2000
Palavras-chave:  ABTS radical bleaching
Antioxidants
C-phycocyanin bleaching
Total antioxidant reactivity
Total reactive antioxidant potential
Resumo:  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
Tipo:  Journal article
Idioma:  Inglês
Identificador:  http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602000000200006
Editor:  Sociedad de Biología de Chile
Formato:  text/html
Fonte:  Biological Research v.33 n.2 2000
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