Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Reexamination Certificate
2005-12-02
2010-11-09
Mondesi, Robert (Department: 1645)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
C426S573000, C426S575000, C536S018500, C536S052000, C536S115000, C536S123100, C536S124000
Reexamination Certificate
active
07829697
ABSTRACT:
The invention relates to mutant strains of the genusSphingomonaswhich 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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Bezanson Ralph
Bower Stan
Burke Ellen
Harding Nancy E.
Meissner Dagmar
CP Kelco US, Inc.
Mondesi Robert
Ogunbiyi Oluwatosin
Sutherland & Asbill & Brennan LLP
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