知识与财富的链接
可可茶是我国特有的珍稀野生茶树资源,具有天然不含咖啡碱的特性.本研究以单株选育的无性系品种可可茶1号和可可茶2号为研究对象,运用高效液相色谱法和紫外分光光度法对其蒸青样、绿茶、黄茶、红茶的茶多酚总量、氨基酸总量、黄酮类总量、儿茶素组分、生物碱、茶氨酸及茶黄素、茶红素、茶褐素等成分的含量进行了定性定量分析.结果表明:(1)可可茶1号和2号优势嘌呤生物碱为可可碱,含量分别为3.98％～6.06％和4.21％～6.26％;可可茶鲜叶、绿茶和黄茶的优势儿茶素组分为(一)-gallocatechin gallate(GCG),含量分别为5.26％～ 14.88％和6.51％～13.58％.(2)在鲜叶和各类成茶中,可可茶的茶多酚总量及氨基酸总量均大于对照品种白毛2号,但是茶氨酸的含量明显低于对照种;可可茶和栽培茶树白毛2号制成红茶后,茶多酚含昔均比其蒸青样、绿茶、黄茶低.(3)可可茶嫩梢所含的茶叶生化成分呈季节性变化,氨基酸总量和茶氨酸含量为春季＞夏季＞秋季,茶多酚、总黄酮、生物碱及主要儿茶素的含量为夏季＞春季＞秋季.(4)可可茶红茶的茶黄素、茶红素与茶褐素特别是茶褐素远高于白毛2号红茶.
Cocoa tea(Camellia ptilophylla),natural non-caffeine tea tree,is a special tea resourse in southern China.Our research studied on the biochemical ingredients of cocoa tea 1# and cocoa tea 2# using UV-spectrophotometric and HPLC methods,which were the cultivated varieties during its domesticating and breeding process.The chemical analysis results showed that:(1) cocoa tea 1# and cocoa tea 2# were caffeine free tea plant,the major purine alkaloid was theobromine,which were 3.98%~6.06% and 4.21%~6.26% in dry w...
