灰树花又名莲花菌、贝页多孔菌等,分类上属于担子菌亚门、层菌纲、非褶菌目、多孔菌科、多孔菌属。本文以液体发酵所得的灰树花菌丝体为实验材料,采取热水浸提、酸浸提、碱浸提法探讨了灰树花多糖的提取工艺。结果表明:碱浸提法提取率为9.370%,酸浸提法提取率为6.340%,热水浸提法提取率为7.423%,碱法提取要优于热水、酸浸提法。 Grifola frondosa, also known as Lotus, Pteris polyporus, belonging to the Basidiomycotina subclass, Strains Gang, non-laminar, Polyporus, Polyporus. In this paper, the liquid fermentation of the Grifola frondosa mycelium as the experimental material, take hot water extraction, acid leaching, alkali extraction method to explore the Grifola frondosa polysaccharide extraction process. The results showed that the extraction rate of alkali extraction was 9.370%, the extraction rate of acid extraction was 6.340%, the extraction rate of hot water extraction was 7.423%. The extraction by alkali was better than hot water and acid extraction.