The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 06, 1993
Filed:
Aug. 03, 1990
Applicant:
Inventors:
Bruno Gabetta, Milan, IT;
Gianfranco Zini, Milan, IT;
Assignee:
Inverni Della Beffa S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ; C09B / ;
U.S. Cl.
CPC ...
4241951 ; 8646 ; 514456 ;
Abstract
A process for the preparation of extracts with high content in anthocyanosides consists in treating plants, parts of plants or crude extracts with bisulfite ions to give anthocyanoside-bisulfite adducts. Said adducts are then eluted on non ionogenic resins at pH 5-6 and the obtained solution is extracted with polar organic solvents immiscible in water. The obtained extracts have a constant and standardized composition in anthocyanosides.