کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6469727 | 1423982 | 2017 | 4 صفحه PDF | دانلود رایگان |
- The second Gram-positive bacterium Enterococcus faecalis was “wired” to an electrode with an osmium redox polymer.
- The bacterium is able to transfer electrons from its respiratory chain to an electrode.
- d-glucose of different concentrations was used as the electron donor.
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(2,2â²-bipyridine)2-poly(N-vinylimidazole)10Cl]2 +/+ redox polymer. Maximum current density achieved in response to 10 mM d-glucose was 18 ± 1 μA cmâ 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.
Journal: Electrochemistry Communications - Volume 75, February 2017, Pages 56-59