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:
May. 21, 1991
Filed:
Dec. 11, 1989
Applicant:
Inventors:
Stephanie Bringer-Meyer, Krefeld, DE;
Hermann Sahm, Juelich, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P / ; C12P / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
435158 ; 435137 ; 435146 ; 4352521 ; 435259 ; 435822 ;
Abstract
A process is disclosed for obtaining sorbitol and gluconic acid, or gluconate, by fermentation in aqueous glucose/fructose mixtures. Zymomonas mobilis cells are used which have been permeabilized by the freeze technique and which have preferably been obtained by freezing cell centrifugates of pH 6 to 7 at about -20.degree. C., and thawing at room temperature. Cell concentrations of 20 to 60 g of cell dry matter of permeabilized cells/l are preferably used for the fermentation. By using cells which have been permeabilized by freezing and thawing, a considerably higher conversion rate of glucose/fructose into sorbitol and gluconic acid, or gluconate, is achieved.