A strictly aerobic bacterium forming yeller pigment and a highly viscous polysaccharide was isolated. The bacterium was identified as Pseudomonas mendocia. The polysaccharide was presumed to be ${\beta}-glucan$ with o-acetyl group in its structure and...
A strictly aerobic bacterium forming yeller pigment and a highly viscous polysaccharide was isolated. The bacterium was identified as Pseudomonas mendocia. The polysaccharide was presumed to be ${\beta}-glucan$ with o-acetyl group in its structure and the constituent sugar components were glucose and rhamnose in the molar ratio of 2.1: 1.0. The intrinsic viscosity was 64.73dl/g. The apparent viscosity of 1% aqueous solution was 428 mPa.s. at $42\;sec^{-1}$ and the yield stress of the solution was 8.89Pa. The polysaccharide did not have thermal stability but show pH and salt stability.