直近一年間の累計
アクセス数 : ?
ダウンロード数 : ?
ID 116295
著者
Nakagawa, Kasumi Tokushima University
Takeuchi, Michiki Kyoto University
Kikuchi, Mayu Kyoto University
Kiyofuji, Suzuna Kyoto University
Kugo, Masami Kyoto University
Kano, Kenji Kyoto University
Ogawa, Jun Kyoto University
キーワード
Indigo Reduction Mechanism
Acetaldehyde
Bioelectrocatalysis
Mediator
資料タイプ
学術雑誌論文
抄録
Indigo is one of the oldest natural blue dyes. Microorganisms and their enzymatic activities are deeply involved in the traditional indigo staining procedure. To elucidate the mechanism of the microbial indigo reduction, we directly performed cyclic voltammetry on alkaline fermenting dye suspensions. A pair of characteristic redox peaks of leuco-indigo was observed in a supernatant fluid of the fermenting dye suspension. On the other hand, it was found that the indigo/leuco-indigo redox couple mediated two-way microbially catalyzed oxidation and reduction in a sediment-rich suspension of the fermenting suspension. Acetaldehyde was supposed to be the electron donor and acceptor of the catalytic reactions. In order to verify the bioelectrocatalytic reaction, we isolated indigo-reducing bacterium K2-3′ from the fermenting suspension, and the two-way bioelectrocatalysis was successfully restaged in a model system containing K2-3′ and methyl viologen (as a soluble mediator instead of indigo) as well as acetaldehyde at pH 10.
掲載誌名
Electrochemistry
ISSN
21862451
13443542
出版者
The Electrochemical Society of Japan
89
1
開始ページ
25
終了ページ
30
発行日
2021-01-05
権利情報
This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium provided the original work is properly cited. [DOI: 10.5796/electrochemistry.20-00123].
EDB ID
出版社版DOI
出版社版URL
フルテキストファイル
言語
eng
著者版フラグ
出版社版
部局
生物資源系