FIELD: technological processes; chemistry.
SUBSTANCE: water extraction of polypore is carried out, and prepared water extract is treated with ethyl acetate to produce ethyl acetate, emulsive and water layers, which are separated, then ethyl acetate layer is evaporated, polyphenols are isolated from emulsion layer by addition of equal volume of ethyl alcohol, from water layer - by addition of 25% of hydrochloric acid until pH is 2.0-2.5.
EFFECT: invention allows to extract products from all layers.
2 ex
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