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Tea polyphenols in tea
1.Skin and tea polyphenols:The outcome of the several experimental studies suggests that green tea possess anti- inflammatory and anticarcinogenic potential,which can very well be exploited against a variety of skin disorders.
2.Antioxidant effects of tea:They may also function ndirectly as antioxidants through 1)inhibition of the redox-sensitive transcription factors,nuclear factor- kappaB and activator protein-1;2)inhibition of pro- oxidant enzymes,such as inducible nitric oxide synthase, lipoxygenases,cyclooxygenases and xanthine oxidase and 3)induction of phase II and antioxidant enzymes, such as glutathione S-transferases and superoxide dismutases (Frei and Higdon,2003).
3.EGCG is effective in reducing acid production in dental plaque and mutans Streptococci.EGCG and epicatechin gallate inhibits actatede hydrogenase activity much more efficiently than epigallocatechin,epicatechin,catechin or gallocatechin. (Hirasawa et al.,2006).