Invention Grant
- Patent Title: Mutant bacterial strains of the genus Sphingomonas deficient in production of polyhydroxybutyrate and a process of clarification of sphingans and compositions thereof
- Patent Title (中): 缺乏生产聚羟基丁酸酯的鞘氨醇单胞菌属的突变细菌菌株和鞘氨醇及其组合物的澄清方法
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Application No.: US11292356Application Date: 2005-12-02
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Publication No.: US07829697B2Publication Date: 2010-11-09
- Inventor: Stan Bower , Ellen Burke , Nancy E. Harding , Yamini N. Patel , J. Carrie Schneider , Dagmar Meissner , Neil A. Morrison , Ralph Bezanson
- Applicant: Stan Bower , Ellen Burke , Nancy E. Harding , Yamini N. Patel , J. Carrie Schneider , Dagmar Meissner , Neil A. Morrison , Ralph Bezanson
- Applicant Address: US GA Atlanta
- Assignee: CP Kelco US, Inc.
- Current Assignee: CP Kelco US, Inc.
- Current Assignee Address: US GA Atlanta
- Agency: Sutherland Asbill & Brennan LLP
- Main IPC: C08B37/00
- IPC: C08B37/00 ; C07G17/00
Abstract:
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.
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