SPME/GC-MS法分析柠檬草挥发气体成分  

Analysis on Aroma Constituents of Cymbopogon Citratus by SPME/GC-MS

作　　者：邓小勇[1] 谷茂[2] 许伯球[2] 谢小玉[1] 

机构地区：[1]西南大学农学与生命科技学院,重庆400716 [2]深圳职业技术学院,广东深圳518055

出　　处：《深圳职业技术学院学报》2008年第2期36-40,共5页Journal of Shenzhen Polytechnic

基　　金：深圳市科技计划资助项目(06ko24xo)

摘　　要：利用固相微萃取SPME/GC-MS技术分析了柠檬草的挥发气体成分。结果表明:柠檬草中共鉴定出25种主要挥发性化合物,以碳氢化合物和醛类物为主,包括β-月桂稀(34.34%)、石竹烯(0.493%)、莰烯(0.646%)、D-柠檬烯(0.126%)、1R-α-蒎烯(0.73%)、柠檬醛(26.5%)、3,7二甲基-2,6-辛二稀醛(26.63%)等。经过精制的柠檬草精油含有酮和烃类化合物,主要有:2-十一酮(0.606%)、2-甲基-5-(1-甲基乙基)环己酮(1.83%)、(1S)-6,6-二甲基-二乙基二环-[3,1,1]-庚烷,(0.34%)、1,4-双亚甲基-环已烷,(0.176%),β-丙基-环已基(0.1667%)。The aroma constituents of Cymbopogon citratus were determined by solid phase microextraction （SPME/GC-MS） for the first time. The result showed that 25 total aroma constituents were detected in Cymbopogon citrates, most of which belong to hydrocarbon and aldehydes, including those common aroma constituents in Cymbopogon citratus, such as β-Phellandrene（34.34%）, Caryophyllene（0.493%）, Camphene （0.464%）, D-Limonene（0.126%）, IR-alpha-Pinene（0.73%）, citral-a（26.5%）, 3, 7-dimethyl-2, and 6-Octadien-al （26.63%）. The results also indicated that the volatiles of Cymbopogon citratus mainly consisted of Ketones and hydrocarbons compounds after refinement; and the content of 2-Undecanone（0.606%）, 5-methyl-2- （1-methy lethenyl）-Cyclohexanone（1.83%）, （IS）-6, 6-dimethyl-2-methylene-Bicyclo[3.1.1]-heptane （0.34%）, 1,4-bis （methyllene）-Cyclohexane（0.176%）, 3-propyl-Cyclohexene（0.1667%） were relatively higher than other aroma constituents in Cymbopogon citratus.

关 键 词：柠檬草 固相微萃取(SPME) 气相色谱/质谱联用(GC—MS) 挥发气体成分 

分 类 号：TQ587[化学工程—精细化工]