茶多酚是茶中主要有效成份。研究表明，绿茶中茶多酚的含量显著高于红茶。茶多酚除了抗菌、抑病毒外，还有抗癌、抗突变功用．茶多酚对T淋巴细胞转化、自然杀伤细胞治性有明显的增强作用。茶叶还可明显抑制黄曲霉素、宋并在等诱导的细胞突变、基因与染色体突变，以及放射线诱导 Tea polyphenols are the main active ingredients in tea. Research shows that the content of tea polyphenols in green tea is significantly higher than that of black tea. Tea polyphenols in addition to antibacterial, anti-virus, but also anti-cancer, anti-mutant function. Tea polyphenols significantly enhance T lymphocyte transformation and natural killer cell treatment. Tea leaves can also significantly inhibit apoptotic cell mutations, gene and chromosome mutations, and radiation induction