TY JOUR TI EVALUATION OF THE QUALITY OF MALT PURCHASED BY E-RETAIL KW malt KW types of malt KW malt quality KW beer KW standard KW organoleptic evaluation KW physico-chemical evaluation KW quality requirements JO Trade, service, food industry AU Zobnina, I.A. AU Chernykh, V.K. PY 2022 IS 2 PB Siberian Federal University