Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Most Probable Number 방법을 이용하여 측정한 중랑천 하상토양의 혐기성 세균의 수와 수질과의 상관 관계

  • 박두현 (서경대학교 생물공학과) ;
  • 김병홍 (한국과학기술연구원 환경연구센터) ;
  • 임시근 (한국과학기술연구원 환경연구센터) ;
  • 최영효 (중랑하수처리사업소 수질분석과)
  • Published : 1996.06.01
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Abstract

Sediments collected from the Jungnang-cheon and its tributaries were used to enumerate anaerobic bacteria by most probable number (MPN) methods. A simple method was developed to detect ferrous ion in the culture fluid in order to count the number of iron ion reducers, and sulfate-reducing bacteria (SRB) and methanogens were detected by the presence of FeS precipitate in the culture or methane in the head space, respectively. The numbers of iron reducer was in the range of 10$^{7}$ - 10$^{8}$ /g in the sediment of the stream containing higher organic content than the tributaries. The sediments of tributaries were analyzed to contain iron reducers less than 10$^{7}$ cells/g. With one exception the numbers of SRB and methanogens were less than 10$^{3}$ cells/g in the sediment. From these results it is concluded that organics in the sediment support the growth of iron reducers, which out-compete SRB and methanogens.

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References

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