64 results about "Candida rugosa" patented technology

The invention provides a heterotrophic nitrification-aerobic denitrification Candida rugosa strain and its application, belonging to the technical field of functional microorganisms. Heterotrophic nitrification and aerobic denitrification Candida rugosa (Diutina rugosa) strain DW‑1, the deposit number is CCTCC NO: M2019166. The invention also provides a microbial preparation for degrading ammonia nitrogen and nitrite nitrogen in freshwater aquaculture sewage comprising the bacterial strain DW‑1. DW-1 strain has the function of heterotrophic nitrification-aerobic denitrification, and can directly convert most of the ammonia nitrogen in nitrogen-containing sewage into gas products through heterotrophic nitrification-aerobic denitrification, and the accumulation of nitrite and nitrate nitrogen less; ammonia nitrogen or nitrite nitrogen can be used as the only nitrogen source for metabolism to achieve high-efficiency denitrification, so the application of the Candida rugosa strain DW-1 or the microbial preparation in the denitrification of freshwater aquaculture water.

The invention relates to a preparation method and application of a compound leavening agent. The preparation method comprises the steps of: separating lactobacillus plantarum, lactobacillus bulgaricus, streptococcus thermophilus, saccharomyces cerevisiae, candida rugosa, candida tropicalis and fermented pichia pastoris, as a leavening agent, from naturally fermented panada to produce a strain so as to prepare freeze-dried strain powder; weighing 1-2 parts of lactobacillus plantarum, 1-2 parts of lactobacillus bulgaricus, 1-2 parts of streptococcus thermophilus, 3-5 parts of saccharomyces cerevisiae, 3-5 parts of candida rugosa, 3-5 parts of candida tropicalis and 3-5 parts of fermented pichia pastoris based on parts by weight, and uniformly mixing to obtain the compound leavening agent. When the compound leavening agent is applied to the cooked wheaten food, bacterial contamination can be effectively prevented, the sanitation of the cooked wheaten food is guaranteed, the quality of the cooked wheaten food is improved, the production cycle is shortened, a production process is controllable, and the preparation method of the compound leavening agent lays a foundation for industrial production.

The invention relates to the technical field of a biological agent, and particularly relates to a cellulose degradation bacteria agent and a raw material strain, and preparation methods and applications of the cellulose degradation bacteria agent and raw material strain. The compound bacteria agent for degrading cellulose mainly comprises a paecilomyces varioti MM2 strain, an aspergillus fumigates MM6 strain, a candida rugosa MJ4 strain, and a bacillus licheniformis MX8 strain. The cellulose can be efficiently degraded and utilized by the compound bacteria agent disclosed by the invention, the compound bacteria agent can be used as a detonating agent and an enhancer of wine sediment compost, the compost process can be accelerated, the compost rotten degree is improved, an organic fertilizer is fabricated, and the cellulose degradation bacteria agent is especially applicable to resourceful treatment of lignocelluloses solid waste and production of the organic fertilizer by using the wine sediment.

The invention relates to a method for preparing R-6-hydroxy-1-aminoindane through dynamic kinetic resolution. The method is characterized by using candida rugosa lipase as a biological resolution catalyst, D-(-)-O-acetyl mandelic acid as an acyl donor and a non-crystal nickel catalyst KT-02 as a racemization catalyst to carry out one-pot dynamic kinetic resolution reaction in an autoclave in the presence of hydrogen to convert 6-hydroxy-1-aminoindane to an R-6-hydroxy-1-aminoindane acyl compound and carrying out acid hydrolysis, alkali freeing, and the like on the acyl compound to obtain R-6-hydroxy-1-aminoindane with ee (enantiomeric excess) value more than 99%. The method has the characteristics of simplicity in operation, cheap and accessible racemization catalyst, complete utilization of the raw materials, high optical purity of the product, and the like, and has great guidance and application values in production and preparation of R-6-hydroxy-1-aminoindane.