超临界CO_2萃取天然除虫菊化学成分的GC-MS分析

GC-MS Analysis of the Chemical Constituents of Natural Pyrethrum Extracted by Supercritical CO_2

采用GC-MS法对超临界CO2萃取天然除虫菊的化学成分进行了分析,用归一化法测定了各组分的相对百分含量。结果共分离出53个组分,鉴定了31个成分,已鉴定的化合物组分占总馏出组分的58.5%。结果表明超临界CO2萃取的天然除虫菊的主要成分为除虫菊酯类以及烷烃类、烯醇、烯酸、甾醇、脂肪酸,其中除虫菊酯的相对含量为50.70%。

GC-MS was used to analyse pyrethrum extracted by supercritical CO2. Area normalization was used to determine relative percentage content of the compounds. As a result, 53 compounds were separated and 31 compounds were identified, the identified compounds accounted for more than 58.5 % of the total compounds, it is indicated that the pyrethrum contains alkane, olefinic alcohol, olefine acid, sterol, fatty acid and pyrethrins. The relative percentage content of pyrethrins is 50.70 %.