滇南古树晒青茶品质化学成分特征研究

对来自云南省南部普洱茶主产区的35份古树晒青茶进行研究,检测古树晒青茶水浸出物、茶多酚和游离氨基酸总量等主要品质化学成分;利用高效液相色谱技术对晒青茶咖啡碱和儿茶素进行分析;运用主成分分析的方法对不同产地的晒青茶进行动态聚类分析.结果表明,不同地区古树晒青茶主要品质化学成分水浸出物、茶多酚、游高氨基酸总量、咖啡碱、儿茶素总量和没食子酸含量均值分别为46.95％、22.76％、2.49％、3.45％、8.73％和0.13％,其变异系数分别为4.58％、8.14％、22.24％、24.06％、19.31％和29.85％;SNK多重比较表明,同一化学成分不同地区古树晒青茶间含量差异显著;聚类分析结果...

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Published in西南农业学报 Vol. 27; no. 5; pp. 1874 - 1883
Main Author 李友勇 方成刚 孙雪梅 刘本英 周萌 蒋会兵 段志芬 成浩 汪云刚
Format Journal Article
LanguageChinese
Published 云南省农业科学院茶叶研究所/云南省茶树种质资源创新及配套栽培工程技术研究中心,云南勐海,666201%云南省农业科学院,云南昆明,650205%中国农业科学院茶叶研究所,浙江杭州,310008 2014
Subjects
古茶树
品质生化成分
晒青茶
特征
Ancient tea plants
Quality chemical components
古茶树
晒青茶
Characteristics
品质生化成分
特征
Sun-dried tea
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ISSN1001-4829

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Summary:对来自云南省南部普洱茶主产区的35份古树晒青茶进行研究,检测古树晒青茶水浸出物、茶多酚和游离氨基酸总量等主要品质化学成分;利用高效液相色谱技术对晒青茶咖啡碱和儿茶素进行分析;运用主成分分析的方法对不同产地的晒青茶进行动态聚类分析.结果表明,不同地区古树晒青茶主要品质化学成分水浸出物、茶多酚、游高氨基酸总量、咖啡碱、儿茶素总量和没食子酸含量均值分别为46.95％、22.76％、2.49％、3.45％、8.73％和0.13％,其变异系数分别为4.58％、8.14％、22.24％、24.06％、19.31％和29.85％;SNK多重比较表明,同一化学成分不同地区古树晒青茶间含量差异显著;聚类分析结果表明,35份茶样共分为6类;这些结果进一步表明,云南古树晒青茶主要品质化学成分含量丰富且多样.
Bibliography:The main quality chemical composition of water extract,tea polyphenols and total free amino acid were studied in 35 sun-dried tea of ancient tea plants from south Yunnan.The eatechins and caffeine were separated by high performance liquid chromatography.The sundried tea of ancient tea plants in different places made the dynamic clustering analysis through the major components analysis method.The results showed that the average contents of water extract,tea polyphenols,total free amino acid and caffeine were 46.95 ％,22.76 ％,2.49 ％,3.45 ％,8.73 ％ and0.13 ％ respectively,and their variable coefficient were 4.58 ％,8.14 ％,22.24 ％,24.06 ％,19.31％ and 29.85 ％,respectively.The SNK multiple comparison results showed that the average content of the same chemical component were signifieantly different in the sun-dried tea of ancient tea plants of different regions.The cluster analysis results showed that the samples were divided into 6 classes.The results showed that the content of the main quality chemical composition of
ISSN:1001-4829