藏药无茎芥挥发油化学成分的气相色谱-质谱分析测定

Analysis of Chemical Components in Essential Oil from Pegaeophyton scapiflorum by Gas Chromatography-Mass Spectrometry

研究了藏药无茎芥[Pegaeophyton scapiflorum(Hook. f. et Thoms.) Marq. et Shaw]挥发油的化学成分。采用同时蒸馏萃取法(SDE)提取无茎芥中的挥发油,使用气质联用技术获得总离子流图,各色谱峰相应的质谱图经过NIST2011标准谱库检索定性,并采用峰面积归一化法进行定量分析,计算各成分的相对百分含量。从无茎芥挥发油中鉴定出82种物质,主要成分为异硫氰酸酯(26.35%)、有机多硫化物(16.35%)、芳香类化合物(15.78%)、醛酮类(13.27%)、脂肪酸类(7.14%)、腈类(3.71%)、烃类(3.51%)和醇类(3.08%)等。结论:藏药无茎芥挥发油中富含异硫氰酸酯,具有很好的开发利用价值。

The volatile constituents of essential oil obtained from Pegaeophyton scapiflorum(Hook.f.et Thoms.)Marq.et Shaw by simultaneous distillation extraction(SDE)were analyzed by using gas chromatography/mass spectrometry(GC/MS)for the first time.Eighty two compounds were identified by matching the mass spectra with NIST2011 library.Main components of volatile oils include isothiocyanates(26.35%),organic multisulfides(16.35%),aromatic compounds(15.78%),aldehydes and ketones(13.27%),fatty acids(7.14%),nitriles(3.71%),hydrocarbons(3.51%)and alcohols(3.08%)etc.Pegaeophyton scapiflorum containing rich isothiocyanates is preferable for potential utilization.