A New Type of Tea PigmentβFrom the Chemi
A New Type of Tea PigmentβFrom the Chemical Oxidation of Epicatechin Gallate and Isolated from Tea
β
Wan, Xiaochun; Nursten, Harry E; Cai, Ya; Davis, Adrienne L; Wilkins, John P G;
π
Article
π
1997
π
John Wiley and Sons
π
English
β 326 KB
Epicatechin-3-O-gallate (ECG), one of the major green tea polyphenols, was oxidised chemically using potassium ferricyanide. The major oxidation product, termed theaΓavate A, which gave a sharp peak on HPLC analysis, was separated and puriΓed by a combination of chromatography on Sephadex LH-20 and