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:
Nov. 21, 1995
Filed:
Oct. 21, 1992
Applicant:
Inventors:
Assignees:
Kabushiki Kaisha Hayashibara, Okayama, JP;
Seibutsu Kagaku Kenkyujo, Okayama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07H / ; C07H / ; C07D / ;
U.S. Cl.
CPC ...
536 185 ; 536-11 ; 536124 ; 536127 ; 536-41 ; 536 182 ; 536 186 ; 549315 ;
Abstract
Disclosed is an industrial-scale preparation of a high 2-O-.alpha.-D-glucopyranosyl-L-ascorbic acid content product with an improved purity, the preparation comprising subjecting a solution containing 2-O-.alpha.-D-glucopyranosyl-L-ascorbic acid and a saccharide derivative of L-ascorbic acid exhibiting a direct reducing activity to an oxidation treatment, subjecting the resultant mixture ti column chromatography using a strongly-acidic cation exchange resin, and recoverying the resultant high 2-O-.alpha.-D-glucopyranosyl-L-ascorbic acid content fraction. Thus, the preparatiobn has a great significance in the industrial field.