한국미생물·생명공학회지 (Microbiology and Biotechnology Letters)

  • 제27권4호
  • /
  • Pages.292-297
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  • 1999
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  • 1598-642X(pISSN)
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  • 2234-7305(eISSN)
한국미생물·생명공학회 (The Korean Society for Microbiology and Biotechnology)
권호 표지

Brevibacterium ketoglutamicum을 이용한 L-Ornithine 생산 연구 PART I : L-Ornithine 생산 고역가 안정화 균주 선발

High Production of L-Crnithine by L-Citrulline Auxotroph of Brevibacterium ketoglutamicum : PART I : Selection of Stable Mutant Strains with Less Revertant Formation

  • 발행 : 1999.08.01
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초록

Overproduction of L-ornithine by mutant strains isolated from Brevibacterium detoglutamicum BK1046 was investigated. The strain was a L-ornithine auxotroph and exhibited culture instability during fermentation. Through a sequential screening effort, a highly stable strain with lless revertant formation was finally selected and designated B. ketoglutamicum BK52 (KCTC0141BP). It prouduced L-ornithine at a high concentration (above 9 g/L) independent of subculture or cultivation time, and also had a very low tendency of revertant formation. In a long-term storage, this strain maintained its cell stability and productivity of L-ornithine to a reasonable range.

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