Strain used for fermenting rice bran and wheat bran extracts for producing grifolan

Abstract

The invention belongs to the field of microorganism application technology and food biotechnology, and discloses a bacterial strain for fermenting rice bran and bran extract to produce grifola frondosa polysaccharide. The grifola frondosa strain has been preserved in the China Center for Type Culture Collection (CCTCC) in Wuhan University, Wuhan, China on April 7, 2011. The preserved strain number is CCTCC No: M2011113, and the name is Grifolasp.JSU10-2. The present invention obtains a bacterial strain that utilizes cheap raw materials to produce high-yield mycelia polysaccharides through protoplast laser mutagenesis. The bacterial strain and the original strain respectively liquid-ferment rice bran and bran compound medium, and the mycelium dry weight and polysaccharide of the mutagenic strain are respectively higher than those of the original The strains improved by 31.7% and 32.6%.

Description

technical field

[0001] The invention relates to the technical field of food microbiology application, in particular to a new grifola frondosa mutagenic strain suitable for growing in a compound medium of rice bran and bran extract and high-yielding the frondosa frondosa polysaccharide. Background technique

[0002] Scientific research at home and abroad and the domestic market have shown that edible fungus polysaccharides can enhance human immunity and assist in the treatment of tumors and other diseases, and have become an auxiliary product for tumor biotherapy. Domestic medicinal products made from the fruiting bodies of edible fungi include Ganoderma lucidum capsules from Wuhu, Anhui, and Grifola frondosa capsules from Qingyuan, Zhejiang. Non-pharmaceutical health products made from edible fungus extracts are also sold. Internationally, New Zealand produces "GanoPoly" polysaccharide extract series products, which are sold to the United States, Australia, China (including ...

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