TY JOUR TI EVALUATION OF THE PIGMENT COMPOSITION OF MICROALGAE PORPHYRIDIUM PURPUREUM ACCORDING TO THE TRUE ABSORPTION SPECTRUM OF THE CULTURE USING A SPREADSHEET PROCESSOR KW porphyridium KW carotenoids KW chlorophyll a KW phycobilins KW true absorption spectrum KW gaussians KW tabular processor JO Russian Journal of Biological Physics and Chemisrty AU Chernyshev, D.N. AU Klochkova, V.S. AU Seryak, E.S. PY 2022 IS 7 PB Federal State Educational Institution of Higher Education Sevastopol State University