Mutant bacterial strains of the genus Sphingomonas deficient in production of polyhydroxybutyrate and a process of clarification of Sphingans and compositions thereof
Stan Bower,Ellen Burke,Nancy E. Harding,Yamini N. Patel,J. Carrie Schneider,Dagmar Meissner,Neil A. Morrison,Ralph Bezanson
申请号：
US14515017
公开号：
US09290783B2
申请日:
2014.10.15
申请国别(地区):
US
年份:
2016
代理人:
摘要：
The invention relates to mutant strains of the genus Sphingomonas which have a mutation in at least one gene encoding a protein involved in polyhydroxybutyrate (“PHB”) synthesis that allows the mutant strains to produce PHB-deficient Sphingans. The invention is also directed to a process for preparing a clarified Sphingan solution comprising heating aqueous Sphingan solution, in particular PHB-deficient Sphingan solution, to a clarification temperature of about 30° C. to about 70° C., and treating the solution with a clarification agent and enzymes. In addition, the invention is directed to a food or industrial product comprising a PHB-deficient and/or clarified Sphingan. One particular embodiment of the invention is directed to a clarified, PHB-deficient high-acyl gellan and the processes of making thereof.
