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2 133 621

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IPC

(21) (22)

Application

97114651/14, 1997-08-20

(22)

Actual filing date

1997-08-20

(45)

Published

1999-07-27

(72)

Inventor

Maksimov O.B.Kulesh N.I.Stepanenko L.S.Gorovoj P.G.

(73)

Holder

Tikhookeanskij Institut Bioorganicheskoj Khimii Dal'Nevostochnogo Otdelenija Ran

METHOD OF PLANT POLYPHENOL EXTRACT PREPARING Russian patent published in 1999 - IPC

Abstract RU 2133621 C1

FIELD: chemical-pharmaceutical industry. SUBSTANCE: invention relates to a method of preparing the plant polyphenol extract showing an antioxidant activity. The raw source are hardwood sprouts and/or bark of Far Eastern bush clover (Lespedeza bicolor). Raw is stored in winter period. Extraction is carried out with an organic solvent three-fold at 40-60 C at ratio raw : solvent = = 1:(5-10). Then the combined extracts are evaporated and a residue is dried under vacuum. EFFECT: antioxidant activity of the end product. 1 tbl, 2 ex

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RU 2 133 621 C1

Authors

Maksimov O.B.

Kulesh N.I.

Stepanenko L.S.

Gorovoj P.G.

Dates

1999-07-27—Published

1997-08-20—Filed

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