Preparation method of uniform tremella polysaccharide

The invention belongs to the technical field of polysaccharide, and particularly relates to a preparation method of uniform tremella polysaccharide, which comprises the following preparation steps: crushing dry tremella, sieving, mixing with distilled water, heating to a boiling state, extracting, cooling to room temperature, centrifugally separating, concentrating supernate, adding an ethanol solution, stirring, and separating out precipitate to obtain tremella crude polysaccharide; standing the tremella crude polysaccharide, taking out precipitate, freeze-drying for later use, redissolving with ultrapure water to obtain a polysaccharide solution, dropwise adding an ATC solution into the polysaccharide solution, adjusting the pH value of the polysaccharide solution, standing, and centrifugally separating to obtain a tremella polysaccharide solution; and adding macroporous resin into the tremella polysaccharide solution, stirring to obtain a decolorized tremella polysaccharide solution, putting the decolorize