TY JOUR TI STUDY OF GRAIN RAW MATERIALS ORGANIC COMPOUND INFLUENCE ON BEER COLOR FORMATION KW beer KW beer color KW soluble nitrogen KW non-starch polysaccharide KW catechins KW riboflavin KW unmalted grain products KW correlation analysis JO Bulletin of KSAU AU Gribkova, I.N. AU Eliseev, M.N. AU Tokarev, P.I. AU Kosareva, O.A. PY 2025 IS 0 PB Krasnoyarsk State Agrarian University