FIELD: food industry.
SUBSTANCE: invention relates to food industry, in particular to production of bran-based biologically active additives. The method for production of a biologically active additive of bran cleared of technological and biological impurities envisages fermentative depolymerisation of technological impurities represented by starch and gluten and their transition into a soluble condition with further washing out with running water. Then one proceeds with complete elimination of incidental microflora by the medium acidification with citric acid until pH=3-4 and two-or three-time autoclaving of the substrate in the acid medium under 1.0 atm during 60 min. Then one performs washing with biologically pure water until a neutral reaction of the flush water and preliminary removal of residual water by gravity or pressing. Then the washed bran mass is dried at a temperature of 80-90°C until the moisture content is 10-12% and milled.
EFFECT: invention allows to product a biologically active additive in the form of bran cleared of technological and biological impurities according to a simplified technology.
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