KSBB Journal

  • 제18권6호
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  • Pages.443-447
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  • 2003
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  • 1225-7117(pISSN)
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  • 2288-8268(eISSN)
한국생물공학회 (The Korean Society for Biotechnology and Bioengineering)
권호 표지

황 산화 세균인 Thiobacillus novellus SRM 성장 최적화

Optimization of the Sulfur-oxidzing Bacteria, Thiobacillus novellus SRM

  • 발행 : 2003.12.01
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초록

황 화합물 악취를 제거하기 위하여 분뇨처리장에서 황 산화 세균을 분리하여 최적성장 조건을 조사하였다. 분뇨처리장에서 1차로 분리한 균주의 생리$.$생화학적 특성 등을 비교한 결과 Thiobacillus novellus SRM으로 명명하였고, 최적 pH와 배양온도는 pH 7.0과 3$0^{\circ}C$이며, 균주의 공기 주입량은 1.0vvm이었다. 균주농도에 따른 균의 비증식 속도를 직선화한 결과 미생물의 최대 비 증식속도는 0.032$hr^{-l}$ , V$_{max}$ 는 1.83h$^{-l}$ 이 되고, $K_{m}$ 은 0.42였다. Thiobacillus 종의 증식속도는 비교적 느리나, 본 연구에서 사용한 Thiobacillus novellus SRM은 증식속도가 빨라 기상의 황 화합물 악취 제거에 이용할 수 있는 유용한 균주로 판단되어진다.

The microorganism was isolated from the night soil treatment plant for the removal of sulfur compounds. The growth conditions of the sulfur-oxidizing bacteria were investigated and the isolate characterized as Thiobacillus noveilus SRM. The optimal pH of Thiobacillus novellus SRM on cell growth was pH 7.0 and the optimal temperature was 30$^{\circ}C$ and the optimal air flow rate was 1 vvm, respectively. As a results of cell growth from the Monod plot, the specific growth rate was 0.032 hr$\^$-l/, $V_{max}$ was 1.43 hr$\^$-l/ and $K_{m}$ was 0.32, respectively. The thiosulfate oxidation by Thiobacillus novellus SRM was made of sulfate ion. The sulfate ion reduced pH and decreased cell growth.

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