4 results about "Aspergillus aculeatus" patented technology

The application discloses a tobacco endophytic fungus metabolite, a preparation method and application in tobacco alternaria alternata prevention and treatment, and relates to the technical field of microbial natural product pesticides. The tobacco endophytic fungus metabolite is a benzoquinone compound peniquinone L, and a structural formula is as follows: The benzoquinone compound peniquinone L is produced by fermentation of tobacco endophytic fungus Aspergillus aculeatus Aspergillus aculeatus Aa-1, and scale fermentation and preparation production are easy to carry out. The tobacco endophytic fungus metabolite benzoquinone compound peniquinone L of the application has inhibitory activity on various agricultural pathogens, and has significant bacteriostatic activity on tobacco alternaria alternata in particular, with an MIC value of 2 μg / mL, which is superior to positive drug carbendazim, and can be used as a leading compound or a new microbial natural product pesticide for tobacco alternaria alternata prevention and treatment.

This invention belongs to the field of food enzyme engineering technology, specifically relating to a strain of *Aspergillus echinococcosis* that produces highly efficient ester-degrading catechin tannin enzymes and its applications. The strain is classified as *Aspergillus echinococcosis* (…). Aspergillus aculeatus LS06, with accession number CGMCC No. 42170. The *Aspergillus echinococcosis* strain provided by this invention serves as a tannin-producing strain, using inexpensive agricultural waste bran as raw material, resulting in low production costs. Simultaneously, the produced tannins exhibit high enzyme activity and high catalytic efficiency for ester-type catechins, demonstrating promising application prospects in tea beverage processing.

The invention provides a phenolic acid degradation fertilizer and a preparation method thereof, raw materials comprise metal cross-linked gel and engineering bacterium spores coated with the metal cross-linked gel, the engineering bacterium spores are one or more of white-rot fungus spores, trichoderma harzianum spores and aspergillus aculeatus spores, and the metal cross-linked gel comprises ferric chloride, sodium alginate and gelatin. Iron chloride, sodium alginate and gelatin form metal cross-linked gel to coat the engineering bacterium spores, phenolic acid pollutants in the environment can chelate metal ions in the metal cross-linked gel, and the engineering bacterium spores in the phenolic acid degradation fertilizer can be released only when the concentration of phenolic acid in the environment reaches a certain threshold value. Further, phenolic acid in the environment is decomposed, and it is ensured that all activity of functional bacteria is delivered to a phenolic acid enriched rhizosphere pollution area.

The invention belongs to the technical field of food enzyme engineering, and particularly relates to aspergillus aculeatus for producing efficient degradation ester type catechin tannase and application of the aspergillus aculeatus. The invention relates to aspergillus aculeatus, which is classified and named as aspergillus aculeatus LS06, and the preservation number of the aspergillus aculeatus is CGMCC (China General Microbiological Culture Collection Center) No.42170. The aspergillus aculeatus provided by the invention is used as a strain for producing tannase, and cheap agricultural product waste bran is used as a raw material, so that the production cost is low. Meanwhile, the produced tannase is high in enzyme activity, has very high catalytic efficiency on ester type catechin, and has the advantages of better application prospect in tea beverage processing and the like.