Efficient preparation method of phellinus linteus polysaccharide

The invention discloses an efficient preparation method of phellinus linteus polysaccharide. The efficient preparation method mainly comprises the following steps: preparation of a treatment liquid: uniformly mixing 80-92.5 wt% of an acetone solution and 37 wt% of a concentrated hydrochloric acid solution according to a volume ratio of (10-30): 1; mixing the phellinus igniarius powder with the treating fluid according to a mass ratio of 1: (8-12), treating in a water bath at 60-80 DEG C for 0.5-1.5 hours, cooling the extracting solution after the treatment is finished, and treating in an ultrasonic instrument at room temperature of 50-100W for 4-10 minutes. According to the method, cellulose hemicellulose and lignin in cell walls are destroyed by adopting a mode of combining an organic solvent and an acid under the action of ultrasonic waves so that the dissolving property of active substances in the cell walls can be changed, the solvent is enabled to penetrate through the cell walls,the dissolution of the a