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:
Jul. 20, 1993
Filed:
Mar. 05, 1991
Donal F Day, Baton Rouge, LA (US);
Doman Kim, Baton Rouge, LA (US);
Louisiana State University Board of Supervisors, Baton Rouge, LA (US);
Abstract
A process for the production of dextran polymers of controlled average number molecular weight sizes, and molecular weight size distributions via the mixed culture fermentation of Leuconostoc mesenteroides and a constitutive mutant microorganism capable of elaborating the enzyme dextranase, particularly Lipomyces starkeyi ATCC 74054, in the presence of sucrose. The Leuconostoc mesenteroides produces the dextran polymer, and the mutant Lipomyces starkeyi ATCC 74054 concurrently produces dextranase, an enzyme whose activity reduces the size of the dextran polymers and permits their growth or reduction in molecular weight size in direct relation to the temperature and time period regimen imposed as conditions for the reactions.