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- 橋本 和仁
- 東京大学大学院工学系研究科、科学技術振興機構 ERATOプロジェクト
書誌事項
- タイトル別名
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- Electrochemistry of Living Current Generating Bacterium Shewanella -Extracellular Electron Transfer via Outer-membrane Cytochrome c-
- Award Accounts 生きている電流発生菌Shewanellaの電気化学--外膜チトクロームcを経由する細胞外電子移動
- Award Accounts イキテ イル デンリュウ ハッセイキン Shewanella ノ デンキ カガク ガイ マク チトクローム c オ ケイユ スル サイボウ ガイデンシ イドウ
この論文をさがす
抄録
Genus Shewanella is a gram-negative microorganism which has a unique property of utilizing solid state metal-oxide as a terminal electron acceptor. The extracellular electron transfer (ET) occurs via cytochromes located in the outer membrane (outer membrane-cytochrome, OMC). Due to the unique property, Shewanella has attracted a lot of attentions from the view point of biogeochemical cycle and microbial fuel cell. In this review, our recent results on the extracellular ET will be introduced with Shewanella loihica PV-4. We used various electrochemical techniques as well as spectroscopic ones to investigate the ET between the microbes and the (solid) electrode. Based on the various experimental results, we show evidences of the existence of direct ET path from OMC to electrode. We also show that the addition of water soluble Mn Porphyrines, semiconducting iron oxide nano colloids, etc., greatly enhances the ET efficiency. The extracellular ET process can be applied to microbial fuel cell. The power output of thin fuel cell, so far we achieved, is ca. 2 W/l, which is almost equal to one of the most efficient bio-fuel cells using isolated protein catalysts.
収録刊行物
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- Bulletin of Japan Society of Coordination Chemistry
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Bulletin of Japan Society of Coordination Chemistry 57 30-35, 2011
錯体化学会