Bacterial strain used for producing ganoderma lucidum polysaccharides by complete feed liquid fermentation of rice bran and wheat bran

Abstract

The invention belongs to the field of microbial application technology and food biotechnology, and discloses a ganoderma lucidum strain used for producing polysaccharides by complete feed liquid fermentation of rice bran and wheat bran. Ganoderma lucidum JSU6161314 is stored in China Center for Type Culture Collection (CCTCC) on 25th, June, 2013, preservation number is CCTCC M2013287, and the bacterial strain is named as Ganoderma lucidum CCTCC M2013287. According to a method disclosed in a drawing of the invention, the novel bacterial strain, which is capable of realizing high yield of ganoderma lucidum polysaccharides, is obtained by modifying ganoderma lucidum CFCC6043. The novel bacterial strain is used for rapid fermentation in a rice bran and wheat bran complete feed liquid culture medium and high yield of ganoderma lucidum polysaccharides. After fermentation, hypha dry weight and hypha polysaccharide yield increase 23.0% and 45% respectively compared with that of the original strain.

Description

technical field [0001] The invention relates to the technical field of food microorganism application, in particular to a new mutagenic strain of a Ganoderma lucidum strain suitable for growing in a composite liquid medium of rice bran and bran whole material and high-yielding Ganoderma lucidum polysaccharide. Background technique [0002] Since Chihara et al. (references: Chihara G, MaedaY, Hamuro J, et al. Inhibition of mouse sarcoma180by polysaccharides from Lentinus edodes (Berk.) sing [J]. Nature, 1969, 222 (5194): 687-688.) In 1969, he published a paper on "Nature" and revealed that lentinan has anti-tumor activity. More than 200 medicinal fungi with anti-tumor activity have been found, some of which are edible fungi, such as Grifola frondosa and Hericium erinaceus , Ganoderma lucidum, etc. The mycelium, fruiting bodies, sclerotia or spores of these edible fungi can produce various active ingredients such as amino acids, proteins, vitamins, polysaccharides, glycosides...

AI Technical Summary

Problems solved by technology

However, the artificial cultivation of Ganoderma lucidum has a long cycle, low production efficiency, high labor intensity, and is subject to seasonal and environmental restrictions. It is vulnerable to pests and diseases, and its quality and output are unstable. However, the number of Ganoderma lucidum collected in the wild is limited, and it is difficult to meet the requirements of large-scale production.

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