Effect of aeration rates on production of extracellular polysaccharide, EPS-R, by marine bacteriumHahella chejuensis |
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Authors: | Hyun Sang Lee Shin Hye Park Jong Ho Lee Hong Kum Lee |
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Institution: | (1) Microbiology Laboratory, Korea Ocean Research & Development Institute, Ansan P. O. Box 29, 425-600 Seoul, Korea;(2) Department of Biology, Sung Kyun Kwan University, 440-746 Suwon, Korea |
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Abstract: | The production of an extracellular polysaccharide, EPS-R, from the marine bacteriumHahella chejuensis was investigated at various aeration rates in a batch culture. Higher aeration rate resulted in enhanced EPS production and
increased the viscosity of the culture broth. At an aeration rate of 1.5 vvm, EPS-R (12.2 g/L) was obtained with a yield (Y
P/S) of 0.6 from the STN medium after 72h of cultivation. TheH. chejuensis cells changed their rod morphology to a short-rod form in the stationary growth phase. |
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Keywords: | aeration rate extracellular polysaccharide Hahella chejuensis marine bacterium |
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