Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Corynebacterium sp. K-199가 생산하는 단백질성 생물응집제

  • 김영준 (고려대학교 생명공학원) ;
  • 최양문 (고려대학교 생물공학연구소) ;
  • 조홍연 (고려대학교 생명공학원) ;
  • 양한철 (고려대학교 생명공학원)
  • Published : 1996.12.01
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Abstract

About 600 microorganisms isolated from soil, marsh, compost, etc. were examined for their flocculating ability in the kaolin suspension and swine wastewater. Among them, K-199 was the best producer of flocculant and was identified to be a species belong to the genus Corynebacterium. The maximum production of the flocculant from Corynebacterium sp. K-199 was observed in culture medium containing 2% glycerol, 0.4% peptone, 0.3% K$_{2}$HPO$_{4}$, 0.1% CaCO$_{3}$, 0.05% NaCl, 0.1% yeast extract, 0.1% MgSO$_{4}$,7H$_{2}$O and initial pH 7.5 when cultured with rotary shaker controlled at 25$\circ$C and 150 rpm. Under the optimal culture condition with jar fermentor, the maximum production was reached to flocculating activity of 780 units/ml after 4 days. From the results of the activity be fully maintained by periodate oxidization, it suggests that the activity is due to the protein.

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