TY JOUR TI INVESTIGATION OF THE PHYSICO-CHEMICAL AND KINETIC PROPERTIES OF BROMELAIN IN THE FREE AND IMMOBILIZED STATE KW bromelain KW immobilization KW physico-chemical properties of enzymes KW chitosan JO Russian Journal of Biological Physics and Chemisrty AU Koroleva, V.A. AU Holyavka, M.G. AU Artukhov, V.G. PY 2019 IS 4 PB Federal State Educational Institution of Higher Education Sevastopol State University