Xanthomonas bipolymer for use in displacement of oil from partia

Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing compound containing saccharide radical

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435101, 435172, 435253, 435910, 166246, 252 855D, 536 1, 536 14, C12P 1906, C12N 1500, C12N 120, C12R 164

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042962030

ABSTRACT:
A mutant strain of the genus Xanthomonas produces a pyruvate-free biopolymer. This biopolymer and the deacetylated form of this new biopolymer provide mobility control solutions which are especially useful for enhanced oil recovery where high brine applications are involved. The mobility control solutions of the present invention may be made from whole or filtered fermentation broth containing the pyruvate-free biopolymer or its deacetylated form. Alternatively, the biopolymer or its deacetylated form may be recovered from the broth and the recovered product used to form the desired mobility control solutions.

REFERENCES:
patent: 3485719 (1969-12-01), Rogouin
patent: 3964972 (1976-06-01), Patton
patent: 4104123 (1978-08-01), Duc et al.
patent: 4154654 (1979-05-01), Campagne
Cadmus et al., "Colonial Variation in Xanthomonas campestris NRRL-1459 and Characterization of the Polysaccharide from a Variant Strain", Can. J. Microbiol. vol. 22, No. 7 (1976), pp. 942-948.
Kidby et al., "Maintenance Procedures for the Curtailment of Genetic Instability: Xanthomonas campestris NRRLB-1459", App. & Environ. Microbiol., vol. 33, No. 4, (1977), pp. 840-845.

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