摘要
采用顶空固相微萃取—气质联用法分析了由乌牛早、鸠坑、福云6号3个茶树品种鲜叶制成绿茶的香气成分,分别鉴定出43、51、42种香气成分.结果表明,3个茶样的香气成分主要以醇类化合物为主,其次为萜烯类和烷烃类化合物,而醛类、酮类和酯类化合物总量较低,未检测到酸类化合物.乌牛早的醇类化合物(57.6%)显著高于鸠坑(35.2%)和福云6号(22.5%),其中,乌牛早的芳樟醇含量极高,达38.94%.乌牛早的萜烯类和烷烃类化合物分别为10.2%、10.1%,鸠坑分别为20.0%、23.3%,福云6号分别为23.3%、7.5%.乌牛早的主要香气成分为1-辛醇、芳樟醇及其氧化物、香叶醇、α-金合欢烯,鸠坑为芳樟醇及其氧化物、金合欢醇、十二烷、环柠檬醛、2,4-二甲基-环己醇,福云6号为1-辛醇、芳樟醇及其氧化物、壬醛、橙花叔醇、3,4-环氧-3-乙基-2-丁酮.
The aroma components in three cultivars of green tea,Wuniuzao,Jiukeng and Fuyun 6,were analyzed using headspace solid-phase micro-extraction-gas chromatography-mass spectrometry method（HS-SPME-GC-MS）.We detected 43 kinds of aromatic substances in Wuniuzao,51 kinds in Jiukeng and 42 kinds in Fuyun 6.The results showed that main compounds in cultivars were alcohols,Wuniuzao had the highest content（57.6%） followed by Jiukeng（35.2%）,while Fuyun 6 had the lowest content（22.5%）,in which Wuniuzao had the highest linalool（38.94%）.The contents of alkenes in Wuniuzao,Jiukeng and Fuyun 6 were 10.2%,20.0% and 23.3%;and for alkanes,10.1%,23.3% and 7.5% respectively.These 3 cultivars had low concentrations of aldehydes,ketones and esters;acids were not found in these samples.The major aromatic components in Wuniuzao were 1-octanol,linalool and its oxides,geraniol and α-farnesene.The major aromatic components in Jiukeng were linalool and its oxides,farnesol,dodecane,cyclocitral and 2,4-dimethyl-cyclohexanol,while Fuyun 6 had more 1-octanol,linalool and its oxides,nonanal,nerolidol and 3,4-epoxy-3-ethyl-2-butanone.
出处
《福建农林大学学报（自然科学版）》
CSCD
北大核心
2011年第6期590-594,共5页
Journal of Fujian Agriculture and Forestry University:Natural Science Edition
关键词
品种
香气成分
顶空固相微萃取
醇类
cultivar
aroma components
headspace solid-phase micro-extration
alcohols
