TY JOUR TI COMPARATIVE ANALYSIS OF POLYPHENOL EXTRACTION TECHNOLOGIES FROM PLANT RAW MATERIALS KW polyphenols KW plant material extraction KW physical extraction methods KW chemical extraction methods KW combined extraction methods KW bioactive substances JO Bulletin of KSAU AU Bugaets, N.A. AU Shamkova, N.T. AU Kobzar, I.N. AU Kechin, C.Y. PY 2025 IS 0 PB Krasnoyarsk State Agrarian University