Heteropolysaccharide s-198

Details Heteropolysaccharide s-198 Heteropolysaccharide s-198

C - Chemistry, Metallurgy

12

N

195/140, 195/34.

C12N 1/20 (2006.01) C08B 37/00 (2006.01) C12P 21/00 (2006.01)

Patent

CA 1187431

ABSTRACT OF THE INVENTION A novel polysaccharide S-198 is disclosed composed of principally carbohydrate, 9-12% protein, and 2-4% O-acyl groups (calculated as O-acetyl). The carbohydrate portion comprises about 13-18% glucuronic acid and the neutral sugars mannose, glucose, and rhamnose in the approximate molar ratio 1:2:2. This polysaccharide is produced by a new Alcaligenes species ATCC 31853, in a suitable fermentation medium. Heteropolysaccharide S-198 is used in various aqueous media specifically formulated for use as hydraulic or lubricating fluids, oil well treating fluids, or flowable pesticides.

399964

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