High-temperature-resistant brown agaricus bisporus strain, sporocarp cultivation method, polysaccharide extraction method and application

The invention discloses a high-temperature-resistant brown agaricus bisporus strain, a sporocarp cultivation method, a polysaccharide extraction method and application. The high-temperature-resistant brown agaricus bisporus LQQ2019129 provided by the invention is obtained by carrying out tissue isolation culture and artificial domestication breeding on wild strains collected from the national natural reserve of Qilian Mountain in Gansu Province, and is preserved in the China General Microbiological Culture Collection Center (CGMCC) with the preservation number of CGMCC NO.40117. In the domestication, breeding and cultivation process of the brown agaricus bisporus, the brown agaricus bisporus is comprehensive in nutritional value, resistant to high temperature, high in stress resistance, rich in wild taste and long in shelf life; meanwhile, polysaccharide extraction and antioxidant performance research are carried out on the sporocarp, and the result shows that the polysaccharide has a scavenging effect on sup