Agricultural and Biological Chemistry
Online ISSN : 1881-1280
Print ISSN : 0002-1369
Antibacterial Substances in Japanese Green Tea Extract against Streptococcus mutans, a Cariogenic Bacterium
Senji SAKANAKAMujo KIMMakoto TANIGUCHITakehiko YAMAMOTO
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JOURNALS FREE ACCESS

1989 Volume 53 Issue 9 Pages 2307-2311

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Abstract

An extract of Japanese green tea, one of the most popular drinks in Japan, was an inhibitor of the growth of Streptococcus mutans, a bacterium responsible for causing dental caries. The analysis of the extract revealed that the main antibacterial components of the extract were several polv phenolic compounds, especially gallocatechin (GC), epigallocatechin (EGC), and epigallocatechin gallate (EGCg). GC was the most active component and its minimum inhibitory concentration against the bacterium was around 250 μg per ml.

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