超临界CO_2萃取灵香草净油的研究

Extraction of Extrait of Lysimachia foenum-graecum Hance By Supercritical Carbon Dioxide

用正交法获得灵香草净油最佳超临界萃取条件为压力为 15 MPa,温度为 35℃ ,时间为 1.5 h,CO2 流量为30 m3/h。放大试验结果表明 ,平均收率可达 1.5 % ,变异系数为 0 .72 %。用 GC- MS技术分析净油的化学成分 ,发现用超临界 CO2

The favor conditions obtained by orthogonal comparison for extracting the extrait of  Lysimachia foenum graecum by the supercritical carbon dioxide are as follows: pressure 15 Pa,temperature 35℃,extracting time 1.5 h,CO\-2 flux 30 m\+3/h.It is obtained by amplifying test that the extrait recovery is up to 1.5% with variation coefficient of 0.72%.The chemical components of the extrait are analyzed and reveal difference to some extent from the results of the previous researches.