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Electrochemical wiring of the Gram-positive bacterium Enterococcus faecalis with osmium redox polymer modified electrodes

Pankratova, Galina LU ; Hasan, Kamrul LU ; Leech, Dónal; Hederstedt, Lars LU and Gorton, Lo LU (2017) In Electrochemistry Communications 75. p.56-59
Abstract

The Gram-positive bacterium Enterococcus faecalis was investigated to test its ability to electrochemically communicate with electrodes. E. faecalis cells were successfully “wired” to gold electrodes through [Os(2,2′-bipyridine)2-poly(N-vinylimidazole)10Cl]2 +/+ redox polymer. Maximum current density achieved in response to 10 mM D-glucose was 18 ± 1 μA cm− 2. Control experiments without redox polymer showed no current response. This demonstrates the efficiency of the osmium-based mediator in electron transfer between the cells having a thick cell wall and the electrode. The findings have significant importance in microbial electrochemistry for further understanding of microbe-electrode... (More)

The Gram-positive bacterium Enterococcus faecalis was investigated to test its ability to electrochemically communicate with electrodes. E. faecalis cells were successfully “wired” to gold electrodes through [Os(2,2′-bipyridine)2-poly(N-vinylimidazole)10Cl]2 +/+ redox polymer. Maximum current density achieved in response to 10 mM D-glucose was 18 ± 1 μA cm− 2. Control experiments without redox polymer showed no current response. This demonstrates the efficiency of the osmium-based mediator in electron transfer between the cells having a thick cell wall and the electrode. The findings have significant importance in microbial electrochemistry for further understanding of microbe-electrode interactions.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Electrochemical communication, Enterococcus faecalis, Gram-positive bacterium, Osmium redox polymer
in
Electrochemistry Communications
volume
75
pages
4 pages
publisher
Elsevier
external identifiers
  • scopus:85008197796
  • wos:000393249700014
ISSN
1388-2481
DOI
10.1016/j.elecom.2016.12.010
language
English
LU publication?
yes
id
96214ac4-eae8-495b-a06a-15c3ee2d3327
date added to LUP
2017-02-06 07:52:55
date last changed
2018-05-13 04:28:30
@article{96214ac4-eae8-495b-a06a-15c3ee2d3327,
  abstract     = {<p>The Gram-positive bacterium Enterococcus faecalis was investigated to test its ability to electrochemically communicate with electrodes. E. faecalis cells were successfully “wired” to gold electrodes through [Os(2,2′-bipyridine)<sub>2</sub>-poly(N-vinylimidazole)<sub>10</sub>Cl]<sup>2 +/+</sup> redox polymer. Maximum current density achieved in response to 10 mM D-glucose was 18 ± 1 μA cm<sup>− 2</sup>. Control experiments without redox polymer showed no current response. This demonstrates the efficiency of the osmium-based mediator in electron transfer between the cells having a thick cell wall and the electrode. The findings have significant importance in microbial electrochemistry for further understanding of microbe-electrode interactions.</p>},
  author       = {Pankratova, Galina and Hasan, Kamrul and Leech, Dónal and Hederstedt, Lars and Gorton, Lo},
  issn         = {1388-2481},
  keyword      = {Electrochemical communication,Enterococcus faecalis,Gram-positive bacterium,Osmium redox polymer},
  language     = {eng},
  month        = {02},
  pages        = {56--59},
  publisher    = {Elsevier},
  series       = {Electrochemistry Communications},
  title        = {Electrochemical wiring of the Gram-positive bacterium <em>Enterococcus faecalis</em> with osmium redox polymer modified electrodes},
  url          = {http://dx.doi.org/10.1016/j.elecom.2016.12.010},
  volume       = {75},
  year         = {2017},
}