FIELD: food industry.
SUBSTANCE: invention relates to food industry, in particular, to a method for processing brewer’s grains. Proposed method consists in fact that brewer’s grains are loosened on vibrating screen, milled in colloid mill with addition of water or centrate in proportion of 0.5:1 to 1:1 with respect to brewer’s grains, to produce paste-like homogeneous mass of brewer’s grains, and then this mass is treated in a screw extractor for further grinding and separation into 2 fractions: suspension with moisture content of 90–95 % and crushed brewer’s grain husk with moisture content of 60–75 %, suitable for further industrial use. Then the suspension is transferred for mechanical filtration to remove residues of milled husks, pumped by pump into storage container, and then dried till moisture content is not more than 7 %. Thus, protein barley product (concentrate) produced by the disclosed method is characterized by high content of protein with preservation of amino acid content of brewer’s grains, as well as low content of fat and fiber. Invention allows to increase the level of extraction of food fractions of brewer’s grain to 90–95 %, to increase the quantity of proteins in the protein barley concentrate to 50–65 wt% in the dry residue.
EFFECT: invention enables to obtain a product of brewer’s grains processing in the form of a protein barley concentrate with particle size of not more than 0.1 mm with protein content of not less than 50 wt% in a dry residue with food energy value of 250±15 kcal, with simplification of the method for production thereof; at that, the amount of the centrate, which is waste of production and directed for utilization, is minimum due to its use in the process cycle for moistening of the raw material supplied for processing.
12 cl, 3 dwg, 3 tbl, 2 ex
