超临界CO2萃取藿香蓟精油的化学成分研究

目的:研究超临界CO2萃取法(SFE)提取藿香蓟精油的化学成分及含量.方法:采用超临界CO2萃取法(SFE)提取藿香蓟精油,用气相色谱-质谱联用技术(GC-MS)分析其成分,并用峰面积归一法计算各组分相对百分含量.结果:鉴定了60个成分,占总组分的95.96％,主要成分有对甲氧基肉桂酸乙酯(12.78％)、桉叶油素(11.59％)、α-蒎烯(8.52％)、樟脑(5.03％)、3-(1-甲醛基-3,4-亚甲二氧基)苯甲酸甲酯)(4.24％),马鞭烯酮(3.52％),β-石竹烯(3.33％),龙脑(3.14％)等,与水蒸气蒸馏法(SD)提取的挥发油成分有非常明显的差别.结论:该研究可为藿香蓟的综合开发利用提供科学依据.

Chemical Constituents of Essential Oil from Aqeratum conyzoides by Supercritical CO2Fluid Extraction

Objective:To analyze the main chemical components of essential oil from Aqeratum conyzoides by supercritical CO2 fluid extraction(SFE).Method: The essential Oil from A.conyzoides was extracted by SFE,and the chemical components was analyzed by gas chromatography and mass spectrometry(GC-MS),then the relative content of each component was determined by area normalization.Result: Sixty components,95.96% of the total oils had been identified,and the main components were 3-(4-methoxyphenyl)-2-propenoic acid ethyl ester(12.78%),eucalyptol(11.59%),1R-α-pinene(8.52%),(+)-2-bornanone(5.03%),3-(1-formyl-3,4-methylenedioxy)methyl benzoate(4.24%),L-verbenone(3.52%),caryophyllene(3.33%),L-borneol(3.14%).The main components were extremely different from the essential oil extracted by team distillation(SD).Conclusion: The present experiments provided a scientific basis for the integrated utilization of A.conyzoides.