Heteropolysaccharide s-657

Details Heteropolysaccharide s-657 Heteropolysaccharide s-657

C - Chemistry, Metallurgy

12

P

195/140, 31/26,

C12P 19/06 (2006.01) A61K 8/73 (2006.01) A61K 47/36 (2006.01) A61Q 19/00 (2006.01) C09K 8/90 (2006.01) C12P 19/04 (2006.01) C12P 21/00 (2006.01) E21B 43/22 (2006.01)

Patent

CA 1318621

2880P/1044A K-2077 TITLE OF THE INVENTION HETEROPOLYSACCHARIDE S-657 ABSTRACT OF THE DISCLOSURE The new heteropolysaccharide S-657, prepared by fermentation of a new strain of Xanthomonas campestris, ATCC 53159, has valuable properties as a thickening, suspending and stabilizing agent in aqueous solutions and is especially valuable for use in well treating fluids. Heteropolysaccharide S-657 is composed principally of carbohydrate, about 12% protein and about 7% (calculated as O-acetyl) acyl groups, the carbohydrate portion containing about 19% glucuronic acid, and the neutral sugars rhamnose and glucose in the approximate molar ratio of 2:1.

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