Fungal polysaccharide active polysaccharides are divided into two types of pure polysaccharides and heteropolysaccharides. Pure polysaccharides are generally made up of more than 10 monosaccharides connected by glycosidic bonds, and can be divided into linear structures and branched structures. In addition to sugar chains, heteropolysaccharides can also contain peptide or lipid components. The active polysaccharides in the health care industry are mainly Ganoderma Lucidum Extract, Ganoderma lucidum polysaccharide，Cordyceps extract, Maitake Extract，Reishi Extract.
（1）Antitumor activity. China has extracted polysaccharides from edible fungi for tumor suppression tests and found that more than 100 varieties have inhibitory effects on sarcomas, and the tumor suppression rate is more than 80% to 90%. The Japanese scholar Chihara Hara discovered in 1968 that the fresh mushroom fruit body extract had a strong anti-cancer effect. Its main ingredient was Shitake Mushroom Extract. The oral inhibition rate of 600mg / kg was 99.3%, and it has been used clinically. In addition, Ganoderma lucidum polysaccharides, Polyporus umbellatus polysaccharides, and Sophora spp. Polysaccharide preparations have also been used in clinical applications.
（2）has antiviral effect. At present, in addition to influenza viruses, the viruses that endanger human health include SARS, AIDS, and avian influenza. According to reports, Shitake Mushroom Extract has the effect of inhibiting the proliferation of influenza virus, and the Grifola frondosa extract has a more obvious inhibitory effect on AIDS Cordyceps polysaccharide also has a certain inhibitory effect on SARS virus. Undesun's manufacturers import a large amount of Grifola frondosa raw materials from China and sell them to the United States after processing: E-mail: firstname.lastname@example.org is mainly used to prevent AIDS. During the SARS period, China imported a large amount of Cordyceps militaris fruit bodies, which were mainly used to prevent SARS virus. Fungal polysaccharides / extracts not only have antiviral effects on humans and animals, but also have a good inhibitory effect on phytotoxicity, such as cucumber, tobacco and other mosaic viruses. Spraying the extract of lentinus culture medium can have significant effects.