茶叶科学Issue(2)：137-144,8.
茶叶香气成分中芳樟醇旋光异构体的分析
Analysis of Optical Isomers of Linalool in Tea Aromatic Components
摘要
Abstract
Linalool is one of the most important tea aroma components with high content, and it has two optical isomers, namely 3R-(-)-Linalool and 3S-(+)-Linalool, both show entirely different aroma qualities. In this study, a method using chiral chromatographic column and based on headspace solid-phase micro-extraction (HS-SPME) was developed to analyze 3R-(-)-Linalool and 3S-(+)-Linalool in green tea and black tea samples. Results showed that 3R-(-)-Linalool and 3S-(+)-Linalool isomers were existed in green and black tea. The ratio of the relative content of 3S-(+)-Linalool to that of 3R-(-)-Linalool in green tea ranged from 2.07 to 14.05, with an average ratio of the relative content of 5.21, while, the ratio varied greatly in steamed green tea, roasted green tea and baking green tea. The ratio of the relative content of 3S-(+)-Linalool and 3R-(-)-Linalool were the highest in baking green tea (8.05), with the lowest in steamed green tea (2.72), and 4.78 in roasted green tea. The ratio of the relative content of 3S-(+)-Linalool to that of 3R-(-)-Linalool in black tea ranged from 0.65 to 0.82, with an average ratio of the relative content of 0.74. The ratio of the two optical isomers during the processing of green and black tea was analyzed as well, with the highest found following de-enzyme stage during the processing of green tea and following 2 h fermentation of black tea (5.78 and 1.59 respectively). Fresh leaves of 12 tea cultivars were also analyzed. Moreover, it varied greatly in different tea cultivars.关键词
绿茶/红茶/香气/芳樟醇/旋光异构体Key words
green tea/black tea/aroma/linalool/optical isomers分类
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杨停,朱荫,吕海鹏,马成英,张悦,施江,刘爽,林智..茶叶香气成分中芳樟醇旋光异构体的分析[J].茶叶科学,2015,(2):137-144,8.基金项目
浙江省自然科学基金（LY14C160002）、现代农业产业技术体系建设专项资金（CARS-23）、中国农业科学院科技创新工程 （）
