Removing Organochlorine Pesticides from Ginseng with Supercritical CO_2 Extraction
LI Xue-yang,LI Shu-fen,QUAN Can,TIAN Song-jiang(Key Laboratory for Green Chemical Technology,School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China)
(Key Laboratory for Green Chemical Technology,School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China
Abstract��
This paper explores the feasibility of removing the residues of organochlorine pesticides(OCPs) from Radix Ginseng with supercritical CO_2 extraction.The experimental results showed that,when the crushed Ginseng were preloaded by a certain concentration of aqueous solution of ethanol,such as 10%(wt) and 70%(wt),and then were extracted with supercritical CO_2 at pressure of 30 MPa and temperature of 60 ��,OCPs can be isolated up to more than 91%,while the loss ratio of the Ginsenosides in Ginseng is less than 3%.This study offers a new approach for effectively isolating organochlorine pesticide residues from Ginseng.
LI Xue-yang,LI Shu-fen,QUAN Can,TIAN Song-jiang.Removing Organochlorine Pesticides from Ginseng with Supercritical CO_2 Extraction[J]. Chemcial Industry and Engineering, 2006,23(2): 155-158
2006, Vol. 23 
