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Review
. 2011 Aug;64(2):87-99.
doi: 10.1016/j.phrs.2011.02.007. Epub 2011 Mar 1.

The chemistry and biotransformation of tea constituents

Shengmin Sang  1 , Joshua D Lambert, Chi-Tang Ho, Chung S Yang
Affiliations
Review

The chemistry and biotransformation of tea constituents

Shengmin Sang et al. Pharmacol Res. 2011 Aug.

Abstract

Tea (Camellia sinensis, Theaceae) is one of the most widely consumed beverages in the world. The three major types of tea, green tea, oolong tea, and black tea, differ in terms of the manufacture and chemical composition. There are numerous studies in humans, animal models, and cell lines to suggest potential health benefits from the consumption of tea, including prevention of cancer and heart diseases. Many of the health benefits have been attributed to the polyphenolic constituents in tea. Catechins and their dimers (theaflavins) and polymers (thearubigins) have been identified as the major components in tea. Methylation, glucuronidation, sulfation, and ring-fission metabolism represent the major metabolic pathways for tea catechins. The present review summarizes the data concerning the chemistry and biotransformation of tea constituents.

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