Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Culture Conditions and Cell Composition of Hydrogen Bacteria Alcaligenes eutrophus ATCC 17697

수소세균 Alcaligenes eutrophus ATCC 17697의 배양조건 및 균체성분

  • Ham, Kyung-Sik (Food Science and Technology Laboratory, Korea Advanced Institute of Science and Technology) ;
  • Kim, Kil-Hwan (Food Science and Technology Laboratory, Korea Advanced Institute of Science and Technology)
  • 함경식 (한국과학기술원 식품공학연구실) ;
  • 김길환 (한국과학기술원 식품공학연구실)
  • Published : 1986.06.01
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Abstract

The culture conditions and cell composition of a hydrogen bacterica, Alcaligenes eutrophus ATCC 17697. were investigated. Optimum pH and temperature for cell growth under autotrophic condition ($H_2$ as energy source, $CO_2$, as crabon source) were around 7.0 and $30^{\circ}C$, respectively. Effect of oxygen partial pressure in the range of 0.059 atm and 0.27 atm on cell growth was also studied. Maximum specific growth rate $({\mu}max=0.31hr^{-1})$ was observed at 0.11 atm of oxygen partial pressure $(H_2:O_2:CO_2=7:1:1)$. The contents of crude protein, nucleic acid and ash in cells were 69.2%, 17.6%, and 3.62%, respectively.

수소세균을 단세포단백질자원으로 이용하기 위한 기초연구로서 수소를 에너지원으로 이산화탄소를 탄소원으로 하는 autotrophic condition에서 수소세균 Alcaligenes eutrophus ATCC 17697의 배양조건 및 균체성분을 조사하였다. 균체성장을 위한 최적 pH와 온도는 각각 7.0과 $30^{\circ}C$ 이었으며 0.059atm부터 0.27atm까지의 산소분압범위에서 균체성장에 대한 산소분압의 영향을 본 결과 산소분압 0.11atm$(H_2:O_2:CO_2=7\;:\;1\;:\;1)$에서 최대비증식속도 ${\mu}max\;=0.31hr^{-1}$를 보였다. 건조균체의 조단백, 핵산, 회분함량은 각각 69.2%, 17.6%, 3.62%이었다.

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