Bioscience, Biotechnology, and Biochemistry
Online ISSN : 1347-6947
Print ISSN : 0916-8451
Food & Nutrition Science Notes
Antioxidative Properties of Functional Polyphenols and Their Metabolites Assessed by an ORAC Assay
Hidekazu ISHIMOTOAkihiro TAIMorio YOSHIMURAYoshiaki AMAKURATakashi YOSHIDATsutomu HATANOHideyuki ITO
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JOURNAL FREE ACCESS

2012 Volume 76 Issue 2 Pages 395-399

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Abstract

We compared the antioxidative activities of polyphenol metabolites with those of intact functional polyphenols by an assay of the oxygen radical absorbance capacity (ORAC). The metabolites of ellagitannin geraniin, chlorogenic acid, and (−)-epigallocatechin gallate displayed more potent antioxidative activity than their respective original compounds. Our findings suggest that these metabolites may play important roles as biological antioxidants after their consumption.

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© 2012 by Japan Society for Bioscience, Biotechnology, and Agrochemistry
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