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2 182 907

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Application

2001119498/04, 2001-07-13

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Start date

2001-07-13

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Actual filing date

2001-07-13

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Published

2002-05-27

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Inventor

Levdanskij V.A.Kuznetsova S.A.Polezhaeva N.I.Kuznetsov B.N.

(73)

Holder

Institut Khimii I Khimicheskoj Tekhnologii So Ran

METHOD OF PRODUCTION OF QUERCETIN Russian patent published in 2002 - IPC

Abstract RU 2182907 C1

FIELD: wood processing. SUBSTANCE: method of production of quercetin involves the treatment of larch wood with oxidation of alkaline or alkaline-earth metal bisulfite with simultaneous treatment by superheated vapor at rapid 190-210 C, under pressure 3-4 MPa for from 100 to 200 s followed by rapid decompression. Invention can be used for production of valuable chemical compounds used in medicine for treatment of patients with cardiovascular disease, in food industry as an inhibitor of oxidation of lipids and oils and in analytical chemistry as a chelate-forming agent used in assay of metal ions. EFFECT: simplified process, decreased numbers of stages, abrupt decrease of time process in oxidation of dihydroquercetin to quercetin. 3 ex

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RU 2 182 907 C1

Authors

Levdanskij V.A.

Kuznetsova S.A.

Polezhaeva N.I.

Kuznetsov B.N.

Dates

2002-05-27—Published

2001-07-13—Filed

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