A Yellow Pigmented Soil Bacterium Producing a Polysaccharide of High Viscosity

고점도 다당류생산 미생물의 분리 및 특성

  • Yoo, Jin-Young (Microbiology Laboratory, Korea Food Research Institute) ;
  • Chung, Dong-Hyo (Department of Food Science and Technology, Chung Ang University)
  • 유진영 (한국식품개발연구원 미생물연구실) ;
  • 정동효 (중앙대학교 식품가공학과)
  • Published : 1989.06.01


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.


Pseudomonas sp.;polysaccharide;analysis;rheology