Saccharomyces cerevisiae YEAST STRAIN, HAVING AMYLASE ACTIVITY, FOR PRODUCING FEED PROTEIN PRODUCT AND METHOD OF PRODUCING FEED PROTEIN PRODUCT

摘要

FIELD: chemistry.;SUBSTANCE: group of inventions relates to feed production, particularly a method for microbiological production of feed yeast from grain wastes. The method involves preparation of grain material by grinding to 120-160 mcm particles. Further, the ground grain material is used to prepare an aqueous suspension containing 15-25% dry substances. The obtained suspension is saccharified with α-amylase and glucoamylase to 6-10% glucose content in the suspension. Nitrogen and phosphorus sources are added to the obtained suspension such that 90 mg of nitrogen and 45 mg of phosphorus are required for synthesis of 1 g of biomass. A culture is added to the obtained nutrient medium, said culture being a producer of the Saccharomyces cerevisiae yeast strain VKPM U-3585, having amylase activity, which is deposited in the Russian National Collection of Industrial Microorganisms (VKPM) and can be used in producing feed protein. The Saccharomyces cerevisiae yeast strain VKPM U-3585 is continuously grown in a multiple-section apparatus while feeding the nutrient medium simultaneously into several sections, followed by concentration of the suspension by vacuum evaporation and drying. Moisture freed at the vacuum evaporation and drying steps is used to prepare the aqueous suspension of grain material.;EFFECT: invention increases output of crude protein and true protein.;5 ex