TY JOUR TI Lactose-Free Buttermilk in Functional Fermented Dairy Drinks KW buttermilk KW lactose-free buttermilk KW functional properties of buttermilk KW bacterial starter cultures KW fermented dairy drinks made from buttermilk JO Dairy industry AU Ostroukhova, I.L. AU Sumerkina, Y.S. PY 2026 IS PB Kemerovo State University