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:
Aug. 16, 1994
Filed:
Dec. 14, 1992
Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo, Okayama, JP;
Abstract
A high .alpha.-glycosyl-L-ascorbic acid content product is prepared by subjecting an aqueous solution containing .alpha.-glycosylL-ascorbic acid together with L-ascorbic acid and/or a saccharide to electrodialysis wherein an anion-exchange membrane is used in order to allow the L-ascorbic acid to predominantly permeate the membrane and to separate the L-ascorbic acid from .alpha.-glycosyl-L-ascorbic acid, or in order to allow the .alpha.-glycosyl-L-ascorbic acid to predominantly permeate the membrane and to separate the .alpha.-glycosyl-L-ascorbic acid from the saccharide. Thus, a high .alpha.-glycosyl-L-ascorbic acid content product having a desirable stability and physiological activity is readily prepared.