Abstract

Capsular polysaccharides of smooth and rough types of colonies of different strains ofAzotobacter chroococcum were analyzed. In polysaccharide hydrolysates the following compounds were detected: galacturonie acid, glucosamine, galactose, glucose, arabinose, fructose, xylose, ribose, rhamnose, deoxy-ribose and another unidentified deoxy-sugar. The smooth types of colonies differ from the rough ones in containing different amounts of galacturonic acid and of galactose in their polysaccharide. In the smooth type there is more galacturonic, acid, in the rough ones there is more galactose.

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