Three components of polysaccharides designated as TF1,TF2,TF3 were obtained from submerged fermentation extractum of Tremella fuciformis precipitated by ethyl alcohol concentration of 35%,50%,65%.

• 对银耳液体深层发酵多糖浸膏进行乙醇分级,得到乙醇终浓度为35%25,50%25,65%25的3个多糖组分,即TF1,TF2,TF3。