INTRODUCTIONRecently, there has been an increase in the volume of production of dairy foods through the introduction of resource-saving technologies. Considering today's world problem of protein deficiency, there is a need to improve the structure of milk processing into butter and cheese in the direction of more complete use of the obtained protein-carbohydrate dairy raw materials (PCDRM), in particular, whey for food purposes.During milk processing, depending on the type of the main product, curd, sour cheese or casein whey is obtained 1, 2 .The main and most valuable components of PCDRM are proteins, lipids (milk fat) and carbohydrates (lactose). In addition to the main components, almost all components of the dry milk residue pass into the whey: mineral salts, non-protein nitrogenous compounds, vitamins, enzymes, hormones, immune bodies, organic acids and water 3,4 .Whey contains some fractions of casein that are not coagulated by enzymes and acids (kappa-casein, etc.), and all fractions of soluble whey proteinslactoalbumin, lactoglobulin, euglobulin, and pseudoglobulin. It is important that the amino acid set of PCDRM proteins includes all essential amino acids 5 .