FIELD: food industry.
SUBSTANCE: invention relates to a composition of biologically active substances that can be used as a supplement for food. The composition of biologically active substances is prepared by extraction of birch bark and comprises the following components, wt.-%: betulin, 65-71; lupeol, 12-16; betulin 3-O-caffeate, 5-15, and accompanying substances, the balance. Also, invention proposes a method for preparing nanodispersion of the abovementioned composition. Invention provides enhancing bioavailability of active substances in the composition.
EFFECT: improved preparing method, valuable properties of composition.
8 cl, 1 tbl, 9 dwg, 7 ex
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