Effect on the epigallocatechin gallate/epigallocatechin ratio in a green tea (Camellia sinensis L.) extract of different extraction temperatures and its effect on IgA production in mice.

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Abstract

We found that the epigallocatechin gallate (EGCG)/epigallocatechin (EGC) ratio in a green tea (Camellia sinensis L.) extract was affected by the extraction temperature. The EGCG/EGC ratio in the 4 °C extract was around 1:3-4, whereas in the 100 °C extract, it was around 1:0.7. Oral administration of the mixture with a high EGC ratio (1:2-3 = EGCG/EGC) resulted in greater IgA production by murine Peyer's patch cells.

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Journal

Journal ID (iso-abbrev): Biosci. Biotechnol. Biochem.

Title: Bioscience, biotechnology, and biochemistry

Publisher: Japan Society for Bioscience, Biotechnology, and Agrochemistry

ISSN (Electronic): 1347-6947

ISSN (Print): 0916-8451

Publication date (Electronic): 2010

Volume: 74

Issue: 12

Affiliations

[1 ] National Institute of Vegetable and Tea Science, NARO, Shimada, Shizuoka, Japan. monobe@affrc.go.jp

Article

Publisher Item ID: JST.JSTAGE/bbb/100498

DOI: 10.1271/bbb.100498

PubMed ID: 21150115

SO-VID: 9c56a3b2-0fce-45b7-b5ce-32ab6df2af4f

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