TY JOUR TI CLASSIFICATION OF EXTRACTION PROCESSES BIOLOGICALLY ACTIVE SUBSTANCES FROM PLANT RAW MATERIALS KW extraction KW extractant KW extractor KW plant material KW classification JO Vestnik of Kazan State Agrarian University AU Semushkin, D.N. AU Ziganshin, B.G. AU Semushkin, N.I. AU Alatyrev, S.S. AU Maksimov, I.I. PY 2023 IS 18 PB Kazan state agrarian University