한국미생물·생명공학회지 (Microbiology and Biotechnology Letters)
- 제17권5호
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- Pages.475-480
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- 1989
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- 1598-642X(pISSN)
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- 2234-7305(eISSN)
Pseudomonas delafieldii가 생성하는 다당류의 레올로지 특성
Rheological Properties of Biopolymer Produced by Pseudomonas delafieldii
- Yoo, Jin-Young (Microbiology Laboratory, Korea Food Research Institute) ;
- Chung, Dong-Hyo (Department of food Science and Technology, Clung Ang University)
- 발행 : 1989.10.01
초록
Pseudomonas delafieldii이 배양액으로부터 분리한 다당류 용액의 물성을 검토하였다. 본 다당류는 매우 점도가 높은 의가소성 물질로 1% 용액의 겉보기 점도는 42sec
The extracellular polysaccharide was isolated from the culture of Ps. delafieldii and its rheological property was evaluated. The aqueous solution was extremely viscous and shows pseudoplastic behaviour. The flow behaviour index and apparent viscosity of 1 %solution were 0.09 and 1169 mPa·s. The solution was stable over pH change but did not have thermal stability. The activation energy of flow of 1 % solution was 4.44 kcal/mole. The concentration dependency could be expressed double logarithmically.