紫藤鲜花在不同开花期的头香成分

Chemical constituents of fragrances released from fresh flowers of Wisteria sinensis during different florescence periods

采用固相微萃取(SPME)吸附不同开花期紫藤Wisteria sinensis鲜花的头香成分,并用气相色谱-质谱法(GC-MS)定量分析紫藤鲜花的头香成分,鉴定出芳樟醇、2-壬酮、反式罗勒烯、2-十一酮、3-[4,8-二甲基-3,7-壬二烯基]-呋喃、2-十三酮、4-丙酮基环庚酮、α-蒎烯氧化物、异草蒿脑和α-金合欢烯等47种化合物;同时考察了紫藤鲜花在不同开花期头香成分的变化情况:随着紫藤花开放进程,挥发性香气成分浓度逐渐增大,盛开期达到最大,后逐渐减小。SPME-GC-MS是一种可用于分析不同开花期鲜花香气成分变化的简单可行的分析方法。

The aim is to develop essential oil Of Wisteria sinensis （Leguminosae） flower. The chemical constituents of fragrance released from fresh flowers of W. sinensis were investigated using headspace solid-phase microextraction（SPME） coupled with gas chromatography-mass spectrometry （GC-MS）. Also, variation in the main constituents of the volatile fragrance during five florescence periods （A： flower bud stage, B：early blooming stage, C： full blooming stage, D： end blooming stage, E： senescence stage） was studied. Results showed that linalool, 2-nonanone, （E）-ocimene, 2-undecanone, furan, 3-（4, 8-dimethyl -3, 7-nonadienyl）-, 2-tridecanone, 4-acetonylcycloheptanone, α-pinene oxide, isoestragole, and α-far nesene were the most abundant volatiles released from the fresh flowers with 47 volatile compounds being identified. And, chemical constituent contents of flower were increased with blooming; reached a maximum when full blooming stage, then decreased. Overall, headspace SPME combined with GC-MS is a simple sampling method for measuring variation in the main constituents of volatile fragrance from fresh flowers during different florescence periods.