茶叶系山茶科植物茶树 (ＣａｍｅｌＩｉａｓｉｎｅｎｉｓｏ.Ｋｔｚｅ .)的干燥嫩叶或叶芽 ,作为软饮料 ,其营养、保健和药用价值历史悠久[1] 。近年 ,随着对茶叶有效成分的深入研究 ,其主要成分茶多酚的营养、保健和药理作用受到广泛的关注 ,并已应用于临床实际[2 ] 。现将茶多 Tea leaves are the dry leaves or leaf buds of the Camellia plant Camellia (CamelIiasineniso.Ktze.). As a soft drink, its nutritional, health, and medicinal properties have a long history [1]. In recent years, with the in-depth study of the active ingredients of tea, the nutrition, health care and pharmacological effects of tea polyphenols, which are the main components, have received extensive attention and have been applied to clinical practice [2]. Now more than tea