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,V23(2): 155-158
2006, Vol. 23 
