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KMID : 0380619890210030453
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Korean Journal of Food Science and Technology
1989 Volume.21 No. 3 p.453 ~ p.460
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A Yellow Pigmented Soil Bacterium Producing a Polysaccharide of High Viscosity
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Abstract
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A strictly aerobic bacterium forming yellow pigment and a highly viscous polysaccharide was isolated. The bacterium was identified as Pseudomonas mendocia. The polysaccharide was presumed to be β-glucan with o-acetyl group in its structure and the constituent sugar components were glucose and rhamnose in the molar ratio of 2.2:1.0. The intrinsic viscosity was 64.73 dl/g. The apparent viscosity of 1% aqueous solution was 428 mPa.s. at 42 sec._(-1) and the yield stress of the solution was 8.89 Pa. The polysaccharide did not have thermal stability but show pH and salt stability.
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