TY JOUR TI DETERMINING THE QUALITY OF BIRCH SAP HARVESTED IN THE KRASNOYARSK REGION KW birch sap KW mineral substances in birch sap KW chemical composition of birch sap KW physicochemical properties of birch sap KW organoleptic properties of birch sap JO Bulletin of KSAU AU Shanina, E.V. PY 2025 IS 0 PB Krasnoyarsk State Agrarian University