TY JOUR TI Aggregation of plant alkaloid berberine with caffeine and C60 fullerene in aqueous solution KW berberine KW caffeine KW C60 fullerene KW aggregation KW equilibrium constant KW UV/Vis spectroscopy JO Russian Journal of Biological Physics and Chemisrty AU Medzhitov, R.A. AU Shupova, E.V. AU Buchelnikova, V.A. AU Buchelnikov, A.S. PY 2021 IS 6 PB Federal State Educational Institution of Higher Education Sevastopol State University