Bactericidal Activity of Green Tea Extracts: the Importance of Catechin Containing Nano Particles

Overview

Journal Sci Rep

Specialty Science

Date 2016 Jan 29

PMID 26818408

Citations 33

Authors

Judy Gopal

Manikandan Muthu

Diby Paul

Doo-Hwan Kim

Sechul Chun

Affiliations

Soon will be listed here.

Abstract

When we drink green tea infusion, we believe we are drinking the extract of the green tea leaves. While practically each tea bag infused in 300 mL water contains about 50 mg of suspended green tea leaf particles. What is the role of these particles in the green tea effect is the objective of this study. These particles (three different size ranges) were isolated via varying speed centrifugation and their respective inputs evaluated. Live oral bacterial samples from human volunteers have been screened against green tea extracts and macro, micro and nano sized green tea particles. The results showed that the presence/absence of the macro and mico sized tea particles in the green tea extract did not contribute much. However, the nano sized particles were characterized to be nature's nano stores of the bioactive catechins. Eradication of these nano tea particles resulted in decrease in the bactericidal property of the green tea extracts. This is a curtain raiser investigation, busting the nano as well as green tea leaf particle contribution in green tea extracts.

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