A comparison of methods employed to evaluate antioxidant capabilities
Biol. Res
;
33(2): 71-77, 2000. tab
Artículo
en Inglés
| LILACS
| ID: lil-443676
ABSTRACT
Three different 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 different responses are obtained from the different methodologies. These differences are interpreted in terms of the different factors (stoichiometric factors and/or reactivities) that determines the indexes evaluated by these different methodologies.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Peróxidos
/
Espectrometría de Fluorescencia
/
Vino
/
Cromanos
/
Mediciones Luminiscentes
/
Antioxidantes
Idioma:
Inglés
Revista:
Biol. Res
Asunto de la revista:
Biologia
Año:
2000
Tipo del documento:
Artículo
País de afiliación:
Chile
Institución/País de afiliación:
Catholic University of Chile/CL
/
University of Santiago/CL
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