云南大叶种茶不同品种儿茶素组分含量分析

doi:10.11924/j.issn.1000-6850.2014-0262

摘要/Abstract

摘要： 为进一步研究云南大叶种茶不同品种生化特性，本文以云南省勐海县境内种植面积较大的5个云南大叶种茶为研究对象，通过对茶叶中茶多酚、总儿茶素及主要儿茶素单体组分进行检测及对比，对不同品种间儿茶素组分含量进行了分析。结果表明：勐海大叶茶、大黑茶、云抗10号、云抗14号、长叶白毫5个云南大叶种茶叶中茶多酚含量均超过30%（干重），分别为35.4%、31.2%、34.8%、37.6%、31.7%；总儿茶素含量均超过20%（干重），分别为24.5%、26.2%、29.7%、32.3%、22.7%；主要儿茶素单体中ECG、EGCG、EC含量较高，以ECG和EGCG所占比例较大，C、EGC、GCG含量较低，均未达到1%。儿茶素组分5个品种均以酯型儿茶素（EGCG、ECG、GCG）所占比例较大，占茶多酚总量比例在54.49-72.18%之间、占总儿茶素含量的比例在76.53-84.58%。总体来看，研究所选的5个云南大叶种茶中茶多酚、总儿茶素含量较高，主要儿茶素单体中以酯型儿茶素为主，但是不同品种间茶多酚、总儿茶素及主要儿茶素单体（除GCG）含量都存在显著差异。

关键词: 选育, 选育

Abstract: To further study the biochemical characteristics of different cultivar of Camellia sinensis var. assamica in Yunnan, we analyzed 5 cultivars which had large planting area in Menghai, Yunnan and the catechin constituent content among different cultivars through detecting the content of tea polyphenol(TP), total catechins and main catechins. The results showed that all the 5 cultivars (Camellia sinensis var. assamica in Menghai,‘Dark Green Tea’,‘Yunkang No.10’,‘Yunkang No.14’and‘Changye-baihao’) had TP content more than 30%, and were 35.4%, 31.2%, 34.8%, 37.6% and 31.7% respectively. The total catechins content more than 20%, and were 24.5%, 26.2%, 29.7%, 32.3% and 22.7% respectively. In main catechins, ECG, EGCG and EC contents were higher, and the proportion of ECG and EGCG was larger, the contents of C, EGC and GCG were lower, and did not reach 0.5%. The catechins content of the 5 cultivars, the proportion of ester catechins (EGCG, ECG and GCG) was larger, it was between 54.49%-72.18% in TP, and between 76.53%- 84.58% in total catechins. On the whole, in all the 5 materials, the contents of TP and total catechins were higher, ester catechins was main catechin. However, the contents of TP, total catechins and main catechins (except GCG) had significant differences among different cultivars.

谢志英黄立文王秀华满红平. 云南大叶种茶不同品种儿茶素组分含量分析[J]. 中国农学通报, 2014, 30(19): 146-150.

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