| 不同年份生产帝泊洱茶珍HPLC指纹图谱研究 |
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| 引用本文： | 刘顺航,徐咏全,李长文,何忠荣,王超.不同年份生产帝泊洱茶珍HPLC指纹图谱研究[J].茶叶通讯,2016(2):24-29. |
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| 作者姓名： | 刘顺航 徐咏全 李长文 何忠荣 王超 |
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| 作者单位： | 云南天士力帝泊洱生物茶集团有限公司,云南 普洱,665000 |
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| 摘 要： | 本研究对2011~2014年生产的20个帝泊洱茶珍样品进行分析,建立了帝泊洱茶珍高效液相色谱指纹图谱,同时结合化学计量学对帝泊洱茶珍和竞品茶珍进行区分。结果表明:指纹图谱相似性分析,帝泊洱茶珍相似系数均大于0.995,而10个竞品茶珍相似度均小于0.970。通过系统聚类和偏最小二乘判别分析,可明显区分帝泊洱茶珍和竞品茶珍。变量投影重要性准则研究显示,没食子酸(GA)、3号峰(未知物)、没食子儿茶素(GC)、儿茶素(C)和表没食子儿茶素没食子酸酯(EGCG)等5种化合物相对含量的不同是区分帝泊洱茶珍与竞品茶珍主要因素。
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| 关 键 词： | 帝泊洱茶珍 高效液相色谱 指纹图谱 化学计量学 |
Study on Deepure Instant Pu-erh Tea from Different years by HPLC Fingerprint |
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| LIU Shun-hang,XU Yong-quan,LI Chang-wen,HE Zhong-rong,WANG Chao.Study on Deepure Instant Pu-erh Tea from Different years by HPLC Fingerprint[J].Tea Communication,2016(2):24-29. |
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| Authors: | LIU Shun-hang XU Yong-quan LI Chang-wen HE Zhong-rong WANG Chao |
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| Abstract: | In this study, 20 batches Deepure instant pu-erh tea samples from 2011-2014 were evaluated by using high liquid chromatography (HPLC) ifngerprint. Meanwhile, the Deepure instant pu-erh tea samples were authenticated within different manufacturers by chemometrics method. The chemometrics method included hierarchical clustering analysis, partial least squares-discriminant analysis and variable importance for the project analysis. Results showed that the similarities of 20 batches of instant pu-erh tea samples were more than 0.995, and the 10 similar products were lower than 0.970. The Deepure instant pu-erh tea samples and similar products can be signiifcantly distinguished by hierarchical clustering analysis, partial least squares-discriminant analysis. The results of variable importance for the study showed that ifve compounds were the important factors for discrimination of samples. |
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| Keywords: | Deepure instant pu-erh tea High liquid chromatography Fingerprint Chemometrics method |
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