... product, containing plenty of catechins, flavonoids, etc. Now, tea polyphenol (TP) has been widely applied in foods, cosmetics and medicine industry ... better than those of BHA, BHT, VE, and etc. Furthermore, TP appears synergetic effect with vitamin E, vitamin C and citric ... , B2 and β -carotene in foods, inhibit the propagation of bacteria. TP is used as a food additive, like chewing gum, toothpaste ...