Bioscience, Biotechnology, and Biochemistry
Online ISSN : 1347-6947
Print ISSN : 0916-8451
Food & Nutrition Science Notes
Methylation of Tea Catechins by Rat Liver Homogenates
Kazuo OKUSHIOMasayuki SUZUKINatsuki MATSUMOTOFumio NANJOYukihiko HARA
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1999 Volume 63 Issue 2 Pages 430-432

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Abstract

  Methylation of (-)-epigallocatechin (EGC), (-)-epicatechin gallate (ECg), and (-)-epigallocatechin gallate (EGCg) was carried out with a rat liver homogenate and S-adenosyl-L-methionine. A structural analysis of the reaction products by MS and NMR showed that 4′-O-methyl EGC, 4″-O-methyl ECg, and 4″-O-methyl EGCg had been formed from EGC, ECg, and EGCg, respectively. These results suggest that methylation may be one of the metabolic pathways to the catechins.

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© 1999 by Japan Society for Bioscience, Biotechnology, and Agrochemistry
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