广东陈香茶特征香气物质研究

Research on characteristic aroma material in Guangdong Chenxiang tea

为研究广东陈香茶特征香气物质,采用顶空固相微萃取方法(HS-SPME)结合气质联用技术(GC-MS)鉴定了9个广东陈香茶样品中的香气物质种类及其含量。结果表明:共鉴定出醇类、酮类、杂氧化合物、醛类和烯类等50多种香气化合物;具有木香、药香和"陈香"特征的呈香物质比对照显著增加,主要包括雪松醇、雪松烯、β-愈创烯、α-紫罗酮、β-紫罗酮、二氢猕猴桃内酯、乙酸苯甲酯、苯甲酸苯甲酯等;而具有花香的物质如芳樟醇、水杨酸甲酯、壬醛等明显减少。推测广东陈香茶的特征香气物质主要为上述具有愉快木香、药香气味的芳香物质。

In order to study the material base of special ＂Chenxiang＂ aroma component of Guangdong Chenxiang tea, headspace solid-phase micro-extraction （HS-SPME） method and gas chromatography-mass spectrometry （GC-MS） were adopted to identify the aroma variety and content in the 9 tea samples. The result showed that more than 50 aroma compounds were identified including alcohols, ketones, heterocyclic oxygen compounds, aldehydes, alkenes, etc. The aroma compounds with pleasant wooden, medicine and stale aroma characters increased significantly compared with the CK, including Cedrol, Cedrene, β-guaiene, a-Ionone, β-Ionone, Dihydroactinidiolide, Benzoic acid benzyl ester, Acetic acid benzyl ester, etc. However flower like aroma such as linalool, methyl salicylate, nonanal decreased significantly. It was deduced that characteristic aroma components of Guangdong Chenxiang tea were the above pleasant wooden, medicine aroma.