Patent ID: 6099845
Filing Date: 2000-08-08
Classification: A61K,A61P

Abstract:
A process for preparing an extract of Rhus verniciflua, which comprises:(a) adding 0.3 to 1 l of an acetone-based solvent to 100 g of Rhus verniciflua,(b) allowing the mixture to stand at 20 to 60.degree. C. for 1 to 30 days to obtain a crude extract,(c) adding water to the crude extract and filtering the resulting mixture to obtain a filtrate,(d) subjecting the filtrate to silica gel adsorption chromatography employing as an eluent a mixture of chloroform and methanol having a mixing ratio ranging from 9:1 to 7:3(v/v) to obtain the extract of Rhus verniciflua.