FIELD: medicine, food industry. SUBSTANCE: larch wood is processed by water at heating. Solid phase is removed. Pulp is cooled. Then organic solvent and concentration by evaporation are conducted. Moreover, larch wood processing is carried out at a quasi-liquid state. Methyltretbutyl ether is used as a solvent. Organic phase obtained is concentrated by evaporation. Water could be subjected to deionization. Organic phase before concentration by evaporation is passed through a carbon filter. Concentration by evaporation is conducted under vacuum conditions. EFFECT: higher output and purity degree of dihydroquercetin, simplified technology of larch wood processing to obtain bioflavonoids, shortened terms of processing. 2 tbl, 3 ex, 1 dwg
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