不同品种桂花挥发油成分的GC-MS分析

采用水蒸气蒸馏法提取了江西地区金桂、银桂和四季桂3种桂花的挥发油,通过气相色谱-质谱联用法分析鉴定了3种桂花挥发油的化学成分及其含量。金桂挥发油中的主要成分是氧化芳樟醇、香叶醇、 α-紫罗兰酮、β-紫罗兰酮、二氢猕猴桃内酯和邻苯二甲酸二丁酯等;主要香气成分为香叶醇、 α-紫罗兰酮、 β-紫罗兰酮、丁位癸内酯和芳樟醇及其氧化物。银桂挥发油的主要成分是氧化芳樟醇、环氧芳樟醇、丁位癸内酯、 β-紫罗兰醇、 β-紫罗兰酮、二氢猕猴桃内酯、邻苯二甲酸二异丁酯和邻苯二甲酸二丁酯等;主要香气成分为β-紫罗兰醇、 β-紫罗兰酮、丁位癸内酯和氧化芳樟醇。四季桂挥发油的主要成分是香叶醇、茶香螺烷、 β-紫罗兰醇、 4-(2,6,6-三甲基-环己-1-己烯)-丁烷-2-醇、邻苯二甲酸二丁酯和丁位癸内酯等;主要香气成分为β-紫罗兰醇、香叶醇和茶香螺烷。

Analysis of Essential Oil Compounds from Different Species Osmanthus fragrans Lour. by Gas Chromatography-Mass Spectrometry

The essential oils from 3 varieties Osmanthusfragrans Lour. in Jiang Xi province were obtained by hydrodistillation and analysed by GC-MS. Main compounds of O. fragrans var. thunbergii were linalool oxide, geraniol, α-ionone, β-ionone, dihydroactinidiolide, butyl phthalate, etc. Main aroma components were geraniol, α-ionone, β-ionone, δ-decalactone and linalool oxide. The compounds of O. fragrans were linalool oxide, epoxylinalol, decalactone, α-ionol, β-ionone, diisobutyl phthalate, etc. Main aroma components were β-ionone, diisobutyl phthalate and linalool oxide. The compounds of 0. fragrans var. semperflorens were geraniol, theaspirane, βionol, dihydroactinidiolide, decalactone, 4-（ 2,6, 6-Trimethyl-cyclohex-1- enyl）-butan-2-ol, etc. Main aroma components were β-ionol, geraniol and theaspirane.