High-yield production of hydrogen by Enterobacter aerogenes mutants with decreased α-acetolactate synthase activity
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概要
- 論文の詳細を見る
To enhance hydrogen (H2) production from glucose by Enterobacter aerogenes HU-101, two mutants, strains VP-1 and VP-2, with decreased α-acetolactate synthase activity, were isolated using the Voges–Proskauer (VP) test. In pH-uncontrolled batch culture, both mutants showed a lower 2,3-butanediol yield for the glucose consumed than that shown by the wild-type strain, although glucose remained in the medium after 12 h of culture. In the same cultures, compared to the H2 yield of 0.80 mol/mol-glucose of the wild-type strain, strain VP-1 showed a high H2 yield of 1.8 mol/mol-glucose with decreased lactate and increased succinate yields, while strain VP-2 showed an H2 yield of 1.0 mol/mol-glucose with an increased lactate yield. Increasing the phosphate buffer concentration, which contributes to maintaining the pH in the medium, increased the glucose consumption by both strains. However, in a pH-controlled batch culture at neutral pH, the H2 yield of strain VP-1 was decreased to 1.2 mol/mol-glucose due to the accumulation of formate, an intermediate of the H2-producing pathway, with the yield of H2 plus formate being 1.7 mol/mol-glucose.
- 社団法人日本生物工学会の論文
- 2004-04-25
著者
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ITO Takeshi
Department of Ophthalmology and Visual Science, Nagoya City University Graduate School of Medical Sc
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Nishio N
Department Of Molecular Biotechnology Graduate School Of Advanced Sciences Of Matter Hiroshima Unive
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Nishio Naomichi
Department Of Fermentation Technology Faculty Of Engineering Hiroshima University
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NAKASHIMADA YUTAKA
Department of Molecular Biotechnology, Graduate School of Engineering, Hiroshima University
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KAKIZONO TOSHIHIDE
Department of Fermentation Technology, Faculty of Engineering, Hiroshima University
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Kakizono T
Department Of Molecular Biotechnology Graduate School Of Advanced Sciences Of Matter Hiroshima Unive
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Kakizono Toshihide
Department Of Fermentation Technology Faculty Of Engineering Hiroshima University
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Nakashimada Y
Department Of Molecular Biotechnology Graduate School Of Advanced Sciences Of Matter Hiroshima Unive
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Nakashimada Yutaka
Department Of Molecular Biotechnology Graduate School Of Advanced Sciences Of Matter Hiroshima Unive
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Nishio Naomichi
Department Of Fermentation Technology Faculty Of Engineering Hiroshima Univeisity
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Nakashimada Yutaka
Department Of Fermentation Technology Faculty Of Engineering Hiroshima University
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Ito Takeshi
Department Of Applied Chemistry And Biotechnology Faculty Of Engineering Fukui University
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Ito Takeshi
Department Of Molecular Biotechnology Graduate School Of Advanced Sciences Of Matter Hiroshima Unive
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Ito Takeshi
Department Of Applied Bioscience Graduate School Of Agriculture Hokkaido University
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柿薗 俊英
Department of Molecular Biotechnology, Graduate School of Advanced Sciences of Matter, Hiroshima University
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