[Supercritical fluid extraction of beta-elemene under lower pressure].
A method has been developed for the extraction and analysis of the active component beta-elemene from Rhizoma Atractylodis Macrocephalae by supercritical fluid extraction with CO2 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. beta-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.
Chen
S L
SL
Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
You
J
J
Wang
G J
GJ
D031174:Atractylodes / Q000737:chemistry*; D025924:Chromatography, Supercritical Fluid / Q000379:methods*; D018517:Plant Roots / Q000737:chemistry; D011312:Pressure; D012717:Sesquiterpenes / Q000032:analysis*
D012717:Sesquiterpenes; C445979:beta-elemene