Extracellular Electron Transfer Enhances Polyhydroxybutyrate Productivity in Ralstonia eutropha

Koichi Nishio, Yuki Kimoto, Jieun Song, Tomohiro Konno, Kazuhiko Ishihara, Souichiro Kato, Kazuhito Hashimoto, Shuji Nakanishi

研究成果: Article査読

23 被引用数 (Scopus)

抄録

Polyhydroxyalkanoate is a biodegradable and biocompatible polymer that is synthesized in intracellular granules by a wide variety of microorganisms under growth-suppressed conditions. Herein, we report that polyhydroxybutyrate (PHB) productivity in Ralstonia eutropha was accelerated by extracellular electron transfer (EET) using a biocompatible mediator in an electrochemical system. When the electrode potential was poised at 0.6 V (vs the standard hydrogen electrode) where the EET pathway was constructed, the PHB production rate was enhanced by 60% compared to the case without the EET process. The results indicate that the extracellular anode served as an additional electron acceptor for microbial metabolism, resulting in acceleration of glycolysis and hence PHB synthesis.

本文言語English
ページ(範囲)40-43
ページ数4
ジャーナルEnvironmental Science and Technology Letters
1
1
DOI
出版ステータスPublished - 2013 11 11
外部発表はい

ASJC Scopus subject areas

  • 環境化学
  • 生態学
  • 水の科学と技術
  • 廃棄物管理と処理
  • 汚染
  • 健康、毒物学および変異誘発

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