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. 25, 2015
Filed:
Nov. 15, 2011
Eva Albers, Partille, SE;
Lisbeth Olsson, Göteborg, SE;
Rakesh Koppram, Göteborg, SE;
SCANDINAVIAN TECHNOLOGY GROUP AB, Lund, SE;
Abstract
A method for producing a strain ofwith introduced genes coding for xylose reductase, xylitol dehydrogenase and xylulokinase and with improved ethanol production, improved xylose conversion and reduced xylitol production is described. The method comprises culturing the cells in a repetitive batch series in a medium at a xylose concentration of about 15-25 g/l and at a temperature of about 28-32° C., and thereafter lowering the xylose concentration in at least one step at a temperature of about 28-32° C. to obtain an increased selection pressure for improved xylose fermentation, improved ethanol production and reduced xylitol production, and continuing the culturing of the cells in said repetitive batch series. Further, strains ofobtained by the method according to the invention are described.