FIELD: medicine, pharmacy. SUBSTANCE: method involves extraction of centaury blue herb or grist with hot water (after preliminary flavonoids isolation) at ratio raw : extractant = 1:(15-20) for 40-50 min, extract evaporation, precipitation with 90% ethanol, filtration and drying. Yield is increased from 4.5% to 9.5%. EFFECT: simplified method, increased yield. 2 tbl
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