TY JOUR TI EFFECTIVENESS OF CALCIUM CHLORIDE ADDITION TO THE NUTRIENT MEDIUM FOR CULTURING B. SUBTILIS TO INCREASE α-AMYLASE YIELD KW amylolytic activity KW Bacillus subtilis KW calcium chloride KW cultivation optimization KW mathematical modeling JO Bulletin of KSAU AU Burnysheva, T.O. AU Barakova, N.V. AU Meledina, T.V. AU Afanasenko, A.E. PY 2026 IS 0 PB Krasnoyarsk State Agrarian University