BACTERIAL EXOPOLYSACCHARIDES FROM THE GENUS ANCALOMICROBIUM

The exopolysaccharide compositions of three polyprothecoid bacteria we re determined, i.e, Ancalomicrobium adetum (strain A.8) and two uniden tified strains, 4.22 and 2.29, which have been provisionally assigned to the genus Ancalomicrobium. The exopolysaccharide of A. adetum A.8 c ontained arabinose, xylose, glucose, and galactose in a ratio close to 2:1:3:0.5. The exopolysaccharide of strain 4.22 contained rhamnose, g lucose, and galactose in a ratio of 1:3:1.5, and the exopolysaccharide of strain 2.29 contained rhamnose, xylose, mannose, glucose, and gala ctose in the ratio 1:1:1.5:2.5:2.5.