鲜、干品红丝线叶挥发油化学成分的GC - MS分析

采用水蒸气蒸馏法分别得到新鲜和干燥红丝线叶挥发油,并结合GC-MS对所得样品的化学成分进行了分析和鉴定,用气相色谱峰面积归一化法测定各组分的相对质量分数。结果显示,从鲜叶挥发油中鉴定出32种成分,占挥发油总峰面积的98.81%,主要成分是反式植醇(43.29%)、橙花叔醇(7.07%)、石竹烯(4.91%)、亚麻酸甲酯(3.81%)和植酮(3.74%)等;从干叶挥发油中鉴定出42种成分,占挥发油总峰面积的96.23%,反式植醇(33.50%)、橙花叔醇(7.75%)、石竹烯(5.14%)、1-辛烯-3-醇(7.20%)、植酮(4.45%)和樟脑(4.07%)等为主要成分。两者的共有成分有23种,其他化学成分及其相对质量分数存在一定差异。

GC - MS Analysis of Essential Oils from Fresh and Dry leaves of Peristrophe baphica

The essential oils obtained by hydrodistillation from the fresh and dried leaves of Peristrophe baphica,were analyzed by means of gas chromatography-mass spectrometry(GC-MS).A total of 51 volatile components were identified on the basis of their mass spectra characteristics.Thirty-two compounds were identified in the oils of fresh leaves,accounting for 98.81% of the total oils.Among those thirty-two compounds,trans-phytol(43.29%),nerolidol(7.07%),caryophyllene(4.91%),methyl linolenate(3.81%) and phytone(3.74%) were the major ones.Forty-two compounds,representing 96.23% of the total oils,were identified in the dried leaves oils.trans-Phytol(33.50%),nerolidol(7.75%),1-octen-3-ol(7.20%),caryophyllene(5.14%),phytone(4.45%)and camphor(4.07%) were the major compounds.The chemical composition analysis of the essential oils shows that there are only 23 common compounds in the two kinds of essential oils,while the two kinds of oils differ in other chemical constituents and their relative content.