超临界流体低压萃取β-榄香烯  

Supercritical Fluid Extraction of β-Elemene under Lower Pressure

作　　者：陈淑莲[1] 游静[1] 王国俊[1] 

机构地区：[1]中国科学院兰州化学物理研究所,甘肃兰州730000

出　　处：《色谱》2001年第2期179-181,共3页Chinese Journal of Chromatography

摘　　要：用乙醇改性的超临界CO2 ,经过压力分级步骤选择性萃取白术挥发油中的不同族组分 ,在低压 (12 0MPa)条件下完成对其中的 β 榄香烯的萃取 ,并且将其在萃取物中的质量分数由高压下的 4 8%提高到低压下的 8 0 % ,萃取率达 94 2 % ,同时降低了对设备的要求。A method has been developed for the extraction and analysis of the active component β elemene from Rhizoma Atractylodis Macrocephalae by supercritical fluid extraction with CO\-2 containing ethanol. The article discusses some factors such as pressure,temperature and modifier that affect the selectivity. Class selective extraction has been performed by varying the pressure. β Elemene could almost be extracted completely at lower pressure (12.0 MPa) and its relative amount was raised from 4.8% under higher pressure to 8.0% for lower pressure.

关 键 词：选择性萃取 Β-榄香烯 白术挥发油 超临界二氧化碳 分离 提取 天然药物 

分 类 号：R284.2[医药卫生—中药学]