关键词: 荥经枇杷茶, 野生大茶树, 生化成分

Abstract: [Objective] The purpose of the study was to comprhend the biochemical characteristics of Yingjing loquat tea plants, to provide theoretic basis for the selection of superior individual and exploration of specific resources(e. g. high caffeine, catechins), breeding quality species. [Method] Five types typical tea plants numbered Ⅰ to Ⅴ was chose based on distribution status and botanical features of wild tea plant. Major biochemical components and amino acid composition of this plants were measured. [Results] The contents of Yingjing loquat tea plants were abundant. Water extract content arranged at 34.02%-50.19%. Free amino acids arranged at 2.18%-4.45%. Tea polyphenol content arranged at 27.50%-38.75%. Caffeine content arranged at 3.12%-4.48%, while catechins arranged at 119.24-158.28 mg/g. [Conclusion] According to the contents and phenol ammonia, it is conclusion that the tea plants numbered Ⅰ is suitable for green tea, while the types Ⅲ and Ⅴ are suitable for black tea. What's more, type Ⅰ tea palnt has higher degree of evolution than other four types inferred from the content of theanine and phenylalanine, total catechins and catechins components.

Key words: Yingjing loquat tea, wild tea plants, biochemical component