TY JOUR TI TECHNOLOGICAL FEATURES OF BIOKEFIR WITH PREBIOTIC SUBSTANCES KW biokefir KW lactulose KW prebiotics KW bifidobacteria JO Bulletin of KSAU AU Buyanova, I.V. AU Matyushev, V.V. AU Kuular, C.G. PY 2022 IS 0 PB Krasnoyarsk State Agrarian University