Determination of Catechins in Tea

Introduction

Application News L299 introduced the analysis of teanin and amino acids in tea. This Application News introduces the analysis of catechins in commercially marketed tea products. Catechins are being reported in an increasing number of studies to have antioxidant and cancer-controlling effects, and therefore attracting attention as a substance in commercial drinks. There are five types of catechin that are known; epigallocatechin, catechin, epigallocatechin gallate, epicatechin, and epicatechin gallate. All these can be analyzed using HPLC.

June 23, 2004 GMT