茶叶中的茶多酚是单宁一类的物质,主要成分是具有2-苯基苯并吡喃的基本结构的化合物,如儿茶素这类化合物大约有几十种,另外还包括少量酚酸类化合物,特点是结构上都具有多个酚羟基,它们是决定茶汤、颜色的主体成分,因而是影响茶叶品质的关键性物质。为了适应茶叶品质鉴定的需要,有必要建立一个方 Tea polyphenols in the tea is a tannin class of substances, the main component is a compound with the basic structure of 2-phenyl benzopyran, such as catechins such compounds about dozens, in addition to a small amount of phenol Acid compounds, characterized by the structure has a plurality of phenolic hydroxyl groups, they are the deciduous tea, the main component of color, and therefore affect the quality of tea is the key material. In order to meet the needs of tea quality appraisal, it is necessary to establish a party