OALib Journal期刊
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川渝地区野生大茶树儿茶素和咖啡碱含量比较分析
DOI: 10.3724/SP.J.1145.2013.00379, PP. 379-382
Keywords: 野生大茶树,儿茶素,咖啡碱,高效液相色谱
Abstract:
以儿茶素类和咖啡碱含量为筛选指标,对川渝地区野生大茶树资源进行调查研究.采用高效液相色谱法检测茶样中儿茶素类和咖啡碱含量.结果显示:川渝地区野生大茶树儿茶素总量的变幅为8.028%-17.686%;酯型儿茶素含量的变幅为1.108%-15.454%,其中表没食子儿茶素没食子酸酯(egcg)含量的变幅为0.344%-13.248%;非酯型儿茶素含量的变幅为1.877%-7.496%;咖啡碱含量的变幅为0.323%-6.252%,其中黄山苦茶的咖啡碱含量只有0.323%.发现了4份高egcg茶树资源,其egcg含量大于7%;1份超高含量egcg茶树资源,其egcg含量大于13%;2份高酯型儿茶素/儿茶素总量之比的茶树资源,其比值大于80%;2份高咖啡碱茶树资源,其咖啡碱含量均大于5%;1份低咖啡碱茶树资源,咖啡碱含量只有0.323%,是一种天然的低咖啡碱茶树资源.图1参22
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