Ganoderma lucidum bag-cultivation culture medium capable of increasing content of ganoderma lucidum polysaccharides and selenium in ganoderma lucidum

Abstract

The invention discloses a ganoderma lucidum bag-cultivation culture medium capable of increasing the content of ganoderma lucidum polysaccharides and selenium in ganoderma lucidum. The ganoderma lucidum bag-cultivation culture medium is prepared from the following raw materials in parts by weight: 75 parts of sawdust, 20 parts of wheat bran, 2 parts of maize meal, 1 part of lime, 1 part of gypsum and 1 part of sugar, wherein the material / water ratio is adjusted to be 1: (1.3 to 1.5) by adopting a selenium-enriched nutrient solution. The selenium-enriched nutrient solution is prepared by the following preparation methods: (1) carrying out raw material preparation: preparing 100 parts of pure water, 1.0 part of L-selenomethionine and 5 parts of maize meal; and (2) mixing the raw materials obtained in the step (1), putting the mixture in a steam explosion pot with the pressure of 4MPa, performing heating to the temperature of 150 DEG C, carrying out maintaining for 2 minutes, then, carrying out rapid pressure relief in 1 to 3 seconds so as to obtain slurry, inoculating the slurry with well-cultured liquid bacillus subtilis strains according to the volume percent of 10% at the temperature of 25 DEG C, putting the inoculated slurry into a fermentation tank, introducing sterile air into the fermentation tank, carrying out fermentation for 4 hours under stirring at the stirring revolution rate of 250rpm, maintaining the temperature to 35 DEG C to 37 DEG C, rapidly raising the temperature to 70 DEG C after fermentation is completed, and maintaining the temperature for 1.0 hour for inactivation, thereby obtaining the selenium-enriched nutrient solution.

Description

technical field [0001] The invention relates to the technical field of edible fungus cultivation, in particular to a ganoderma lucidum bag culture medium capable of increasing the content of ganoderma lucidum polysaccharide and selenium. Background technique [0002] Ganoderma lucidum (scientific name: Ganoderma Lucidum Karst), also known as Ganoderma lucidum grass, fairy grass, also known as red lucidum, red lucidum, wood ganoderma, fungus ganoderma, perennial mushroom, ganoderma grass, is the whole plant of polyporaceae red lucidum or purple lucidum. The fruiting body of the fungus Ganoderma lucidum. The shape is umbrella-shaped, and the cap is kidney-shaped, semicircular or nearly circular. Ganoderma lucidum is a precious traditional Chinese medicinal material with a history of thousands of years of medicinal use. It has the effects of invigorating qi and calming the nerves, relieving cough and relieving asthma. Ganoderma lucidum has high medicinal value. After decades ...

AI Technical Summary

Problems solved by technology

[0005] However, the number of naturally grown Ganoderma lucidum is small, and contains a large amount of crude fiber and other impurities, and the polysaccharide content of Ganoderma lucidum is not high (usually 2-5%), so it is not convenient to be directly used as health food or raw material of medicine. Therefore, development can improve the quality of Ganoderma lucidum The artificial cultivation and cultivation technology research of Ganoderma lucidum with polysaccharide and selenium content is the key to the industrialization of Ganoderma cultivation

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