Objective:To compare preparation and physicochemical properties of polysaccharide from the root of Cordalis yanhusuo W.T.Wang by two kinds of extraction methods.Methods:Polysaccharide extracted from the root of Cordalis yanhusuo W.T.Wang with water was precipitated by either ethanol(YHEP) or acetone(YHAP),respectively.Their physicochemical properties,including the content of carbohydrate,elemental composition and monosaccharide composition were determined.Results:Extraction rates of YHEP and YHAP were 5.68%...