Tea Polyphenol is a high and new technology refined product xtracted from green tea by applying advanced process。 The major ingredient is catechin。Tea polyphenol is itemed in the national standard food additives in 1990。To date ,tea polyphenol has been extensively applied in those fields: food、home chemicals、drugs and health products etc. and has show marked effects on anti-oxidation、acteria-inhibiting、anti-radiation、removal of free radicals and eodorization