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. 18, 1980
Filed:
Mar. 10, 1978
Applicant:
Inventors:
Renton C Righelato, Reading, GB;
Trevor R Jarman, Reading, GB;
Assignee:
Tate & Lyle Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P / ; C13L / ; C12R / ;
U.S. Cl.
CPC ...
435101 ; 435274 ; 435813 ; 435831 ;
Abstract
The solution viscosity of a polysaccharide, microbial alginate, produced by culturing strains of Azotobacter vinelandii, is controlled by addition of a protease to the culture broth. The protease can be added during the culture, to obtain a polysaccharide of increased viscosity. Alternatively or additionally protease can also be added after culture but before the polysaccharide is isolated from the broth, for example, to prevent reduction of viscosity during storage. Neutral and alkaline proteases having activity at around pH 7 are particularly suitable.