不同环境下普洱茶儿茶素类差异研究  

Study on Catechins Content Difference of raw Pu'er tea under Different Environmental Conditions

作　　者：董维多 鲍晓华[2] 

机构地区：[1]普洱市职业教育中心,云南普洱665099 [2]普洱学院生命科学系,云南普洱665099

出　　处：《普洱学院学报》2014年第3期6-10,共5页Journal of Pu'er University

摘　　要：普洱茶在不同生长环境下其化学成分不同,因此深入研究普洱茶,让人们进一步认识了解普洱茶,有利于古树茶的合理开发利用和保护。采用30℃真空干燥后温浸提取茶液,用Waters高效液相色谱法梯度洗脱测定儿茶素类。儿茶素类含量及其中EGCG含量最高的是栽培型野生古树茶(23.15%、10.98%),最低的是野生古树茶(7.874%、3.52%);低海拔、土壤的PH值偏低的地方儿茶素类含量高;与树龄没有什么关系。The chemical composition of Non-fermented Pu’er tea in different ecological envi-ronment is different,so further studies are necessary to fully understand the Non-fermented Pu’er tea,as well as to promote the reasonable exploitation and conservation of an old tea trees.The fresh leaves were dried in 30°C under vacuum,extracted by warm soaking.Catechins of the samples were determined by high performance liquid chromatography (HPLC,Waters).The HPLC analysis exhib-ited that the highest contents of Catechins and EGCG were 23.15% and 10.98% of cultivation of wild ancient tea,the lowest contents of Catechins and EGCG were 7.874% and 3.52% of old wild trees. The content of Catechins is higher in low altitude and low soil pH environmental conditions,and has little concern with the tree-age.

关 键 词：普洱茶 儿茶素类 环境 差异 

分 类 号：TS272.5[农业科学—茶叶生产加工]