A kind of Aspergillus niger strain and application thereof

Abstract

The invention belongs to the technical field of microorganisms, and discloses an Aspergillus niger strain, which is identified as Aspergillus niger (Aspergillus niger) Z-9, and whose preservation number is CGMCC No.11130 in the General Microorganism Center of China Microbiological Culture Collection Management Committee. Also disclosed is the application of the Aspergillus niger, which can produce cellulase, pectinase and xylanase by fermentation, can be used to prepare cellulase, xylanase or pectinase preparations, and can also be used to prepare at least The compound enzyme preparation of cellulase, xylanase or / and pectinase expands its application range in feed enzyme preparation; it can be used in biological fermentation feed, and can effectively modify pomace substances into biological protein feed , enhance the added value of pomace, provide excellent materials for the feed application of pomace and other dregs, and the prepared biological protein feed has a good application effect on breeding animals such as dairy cows, sheep and piglets.

Description

technical field [0001] The invention relates to the technical field of microorganisms, in particular to an Aspergillus niger strain and an application thereof. Background technique [0002] Feed enzyme preparation is a kind of feed additive with enzyme as the main functional factor and processed through a specific production process. In the middle of the last century, with the deepening of research on the structure of enzyme protein, enzyme kinetics, enzyme mode of action, and enzyme synthesis and regulation mechanism, the research and production of enzyme preparations also developed rapidly. Jesen used crude enzyme preparations in poultry barley rations, which significantly improved the feeding effect of rations and improved the growth performance of poultry. So far, various countries have opened the prelude to the research on feed enzymes. In 1975, the American Kemin Company launched commercial feed enzyme preparations, marking the beginning of exogenous enzymes as feed a...

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Problems solved by technology

[0005] At present, the production of compound enzyme preparations is mainly obtained through the blending of multiple single enzyme preparations or the fermentation of multiple enzyme-producing strains, but there are few reports on the production of compound enzyme preparations by fermentation of a single multi-enzyme-producing strain.

Wherein the method for the blending of a single enzyme preparation increases the purification and blending process of the enzyme in the production process of the compound enzyme preparation, which increases the amount of labor and cost; the mixed fermentation method of multiple enzyme-producing strains mainly relies on the synergy between different bacterial strains to There are higher requirements for raw materials and fermentation conditions; multi-enzyme single strain fermentation to produce complex enzymes is the simplest and easy-to-achieve method, but it is necessary to vigorously develop excellent strains that produce complex enzymes

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