不同茶树品种制龙井茶的香气特征研究  

Analysis of aroma characteristics of Longjing tea made from different tea cultivars

作　　者：吴小清 周菲菲 叶影 黄艳梅 杨蕾玉 黄海涛[2] 吴媛媛[1] WU Xiaoqing;ZHOU Feifei;YE Ying;HUANG Yanmei;YANG Leiyu;HUANG Haitao;WU Yuanyuan(Department of Tea Science, Zhejiang University, Hangzhou 310058, China;Institute of Tea Research, Hangzhou Academy of Agricultural Sciences, Hangzhou 310024, China)

机构地区：[1]浙江大学茶学系,浙江杭州310058 [2]杭州市农业科学研究院茶叶研究所,浙江杭州310024

出　　处：《浙江农业学报》2022年第3期437-446,共10页Acta Agriculturae Zhejiangensis

基　　金：国家茶叶产业技术体系(CARS-23);浙江省茶树农业新品种选育重大科技专项(2016C02053-1);杭州市农业与社会发展科研主动设计项目(20172015A03)。

摘　　要：龙井茶是我国传统名茶之一,不同茶树品种制成的龙井茶品质特征差异明显,香气类型也各异。本研究通过茶叶感官审评方法对20个品种龙井茶进行香气评分,结果显示,样品主要呈现清香、花香和栗香。运用顶空固相微萃取和气相色谱-质谱联用技术(HS-SPME/GC-MS)对成分组成及其相对含量进行了分析,共检测出74种主要香气成分。通过偏最小二乘判别分析(PLS-DA)发现,不同品种制成的龙井茶在香气成分组成上存在显著性差异,并呈现不同的香气类型。鸠坑无性系单株品种J1132、J1137、J1142、JK8、JK12、JK211、LF栗香物质含量丰富,制得的龙井茶栗香明显;龙井品种制成的龙井茶香气类型多样,L2、L5制成的龙井茶栗香明显,LJ43制成的龙井茶呈清香,ZC108和LJCY制成的龙井茶带花香;福云系列品种制得的龙井茶花香明显。Longjing tea is one of the traditional high-grade tea in China.The tea cultivars have a significant effect on the aroma quality of Longjing tea.In this study,the aroma of 20 varieties of Longjing tea was evaluated by tea sensory evaluation method.The headspace solid-phase microextraction and gas chromatography-mass spectrometry(HS-SPME/GC-MS)was used to analyze the relative contents of aroma compounds from 20 Longjing tea samples which were made from different tea cultivars.A total of 74 main aroma components were detected from these samples.By the partial least squares discriminant analysis(PLS-DA),significant differences in the chemical composition of aroma components from different Longjing tea samples were found and characterized as different aroma types.Jiukeng single plant clone cultivars J1132,J1137,J1142,JK8,JK12,JK211,and LF Longjing tea samples were rich in volatile components with chestnut aroma,which were easy to process Longjing tea with chestnut flavor.The aroma types of Longjing tea samples made from different Longjing cultivars were also different.Tea samples of L2 and L5 were characterized with chestnut fragrance,LJ43 sample was fresh fragrance,ZC108,LJCY were floral fragrance.Fuyun hybrid cultivars were easy to process floral fragrance Longjing.

关 键 词：茶树品种 龙井茶 香气 

分 类 号：S571.1[农业科学—茶叶生产加工]