Strong correlation between bacterial extracellular electron transport and cell envelope polarizability

Conference Paper

Extracellular electron transfer (EET) in Geobacter sulfurreducens is mediated by outer-membrane cytochromes. We show that loss of outer-membrane cytochromes reduces G. sulfurreducens surface polarizability. In the contrast, G. sulfurreducens harvested from microbial fuel cell (MFC) anodes has enhanced surface polarizability compared to its original inoculum, and this increase is positively correlated with MFC incubation time and current production. These results suggest opportunities of using microfluidic dielectrophoresis (DEP) as a selection tool for electrochemically active organisms.

Duke Authors

Cited Authors

  • Wang, Q; Jones, AA; Zhang, P; Lin, L; Buie, CR

Published Date

  • January 1, 2016

Published In

  • 20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, Microtas 2016

Start / End Page

  • 128 - 129

International Standard Book Number 13 (ISBN-13)

  • 9780979806490

Citation Source

  • Scopus