公开(公告)号：US06635758B2

公开(公告)日：2003-10-21

申请号：US10042311

申请日：2002-01-11

申请人： I-Hong Pan ,  Chu-Hsun Lu ,  Hsi-Ho Chiu ,  Lain-Tze Lee ,  Hsin-Jan Yao

发明人： I-Hong Pan ,  Chu-Hsun Lu ,  Hsi-Ho Chiu ,  Lain-Tze Lee ,  Hsin-Jan Yao

IPC分类号： C07H106

CPC分类号： C07H1/08

摘要： An aqueous two-phase system for extracting glycosides from a herb includes the extractive solution, about 5 wt %-30 wt % of salt, about 5 wt %-30 wt % of polyol and selectively about 0 wt %-30 wt % of alcohols. The salt can be dihydrogen phosphate, hydrogen phosphate and phosphate or a mixture thereof, and it also can be sulfates, chlorides, oxalates, or acetates. In addition, a process for extracting glycosides using an aqueous two-phase system is disclosed. The procedures includes preparation of extractive solution, concentration, phase separation, drying, washing with solvent, cooling, filtration and drying of the final products.