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2 038 094

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IPC

(21) (22)

Application

94002793/14, 1994-02-08

(22)

Actual filing date

1994-02-08

(45)

Published

1995-06-27

(72)

Inventor

Tjukavkina N.A.Naumov V.V.Kolesnik Ju.A.Rulenko I.A.Ruchkin V.E.Gavrilova T.F.Naumov O.V.

(73)

Holder

Tovarishchestvo S Ogranichennoj Otvetstvennost'Ju

METHOD FOR PRODUCING DIHYDROQUERCETIN Russian patent published in 1995 - IPC

Abstract RU 2038094 C1

FIELD: medicine. SUBSTANCE: method involves extracting crushed larch wood washed with water at room temperature with acetone and water mixture in the proportion of 1:4 in parts by mass. Acetone is driven off and the dihydroquercetin sediment in water is separated by centrifuging and recrystallized from hot water. EFFECT: higher output of the end product; excluded application of poliamide sorbent; enhanced purity of the product. 1 tbl

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RU 2 038 094 C1

Authors

Tjukavkina N.A.

Naumov V.V.

Kolesnik Ju.A.

Rulenko I.A.

Ruchkin V.E.

Gavrilova T.F.

Naumov O.V.

Dates

1995-06-27—Published

1994-02-08—Filed