Open Access
Electrochemically Active Soluble Mediators from Shewanella oneidensis: Relevance to Microbial Fuel Cells and Extracellular Electron Transfer
Justin C. Biffinger,Lloyd J. Nadeau,Jeremy J. Pietron,Orianna Bretschger,Cynthia C Wiliams,Kenneth H Nealson,Brad R Ringeisen,Glenn R. Johnson +7 more
- Iss: 7, pp 230-230
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TLDR
Understanding electrochemistry of extra-cellular electron transfer is relevant to predicting environmental biogeochemical cycles, as well as in engineering issues for biologically initiated corrosion and the development of microbial fuel cells.Abstract:
: Chemotrophic microorganisms harvest energy from their growth substrates through coupled redox reactions that shuttle electrons to terminal electron acceptors Classic aerobic and anaerobic respiratory chains are well studied and understood Select bacteria are able to use insoluble metal ions as terminal electron acceptors The respiration style requires a mechanism that effectively promotes extra-cellular electron transfer to support cell function and growth One mechanism microbes utilize resembles physical wiring where the microbe grows fine conductive appendages that appear able to allow electron transfer from the cell to the metal ion acceptor1 A second approach is the use of soluble mediators such as, quinones, phenazines, and riboflavin, which are able to shuttle electrons from the cell to the terminal acceptor 2 Understanding electrochemistry of extra-cellular electron transfer is relevant to predicting environmental biogeochemical cycles, as well as in engineering issues for biologically initiated corrosion and the development of microbial fuel cellsread more
Citations
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The Bioelectricity of Tofu Whey in Microbial Fuel Cell System with Lactobacillus bulgaricus
TL;DR: In this article, the potential of tofu whey as a substrate in the MFC system and the effect of agitation speed on the potential difference generated by Lactobacillus bulgaricus was evaluated.
Whey Tahu sebagai Penghasil Biolektrisitas pada Sistem Microbial Fuel Cell dengan Lactobacillus Plantarum
TL;DR: In this paper, the capacity of soy whey as a substrate in the MFC system and the influence of the speed of agitation against potential difference generated were determined with variations 30, 60, 90, 125 and 250 rpm.
Study of Microbial Fuel Cell Technology using Dangke, Whole Milk, and Whey Substrates
TL;DR: In this paper , the authors used the Saccharomyces Cerevisiae microorganism as a catalyst compound to obtain the power density of 9.23 x 10 -3 W/m 2 .
References
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Journal ArticleDOI
Electrically conductive bacterial nanowires produced by Shewanella oneidensis strain MR-1 and other microorganisms
Yuri A. Gorby,Svetlana Yanina,Jeffrey S. McLean,Kevin M. Rosso,Dianne M. Moyles,Alice Dohnalkova,Terry J. Beveridge,In Seop Chang,Byung Hong Kim,Kyung Shik Kim,David E. Culley,Samantha B. Reed,Margaret F. Romine,Daad A. Saffarini,Eric A. Hill,Liang Shi,Dwayne A. Elias,Dwayne A. Elias,David W. Kennedy,Grigoriy E. Pinchuk,Kazuya Watanabe,Shun'ichi Ishii,Bruce E. Logan,Kenneth H. Nealson,James K. Fredrickson +24 more
TL;DR: Nanowires produced by the oxygenic phototrophic cyanobacterium Synechocystis PCC6803 and the thermophilic, fermentative bacterium Pelotomaculum thermopropionicum reveal that electrically conductive appendages are not exclusive to dissimilatory metal-reducing bacteria and may, in fact, represent a common bacterial strategy for efficient electron transfer and energy distribution.
Journal ArticleDOI
Current Production and Metal Oxide Reduction by Shewanella oneidensis MR-1 Wild Type and Mutants
Orianna Bretschger,Anna Obraztsova,Carter A. Sturm,In Seop Chang,In Seop Chang,Yuri A. Gorby,Samantha B. Reed,David E. Culley,Catherine L. Reardon,Soumitra Barua,Soumitra Barua,Margaret F. Romine,Jizhong Zhou,Jizhong Zhou,Alexander S. Beliaev,Rachida Bouhenni,Daad A. Saffarini,Florian Mansfeld,Byung Hong Kim,Byung Hong Kim,James K. Fredrickson,Kenneth H. Nealson +21 more
TL;DR: The results showed that a few key cytochromes play a role in all of the processes but that their degrees of participation in each process are very different, suggesting a very complex picture of electron transfer to solid and soluble substrates by S. oneidensis MR-1.
Journal ArticleDOI
High power density from a miniature microbial fuel cell using Shewanella oneidensis DSP10.
Bradley R. Ringeisen,Emily Henderson,Peter K. Wu,Jeremy J. Pietron,Ricky Ray,Brenda J. Little,Justin C. Biffinger,Joanne M. Jones-Meehan +7 more
TL;DR: It is found that the short diffusion lengths and high surface-area-to-chamber volume ratio utilized in the mini-MFC enhanced power density when compared to output from similar macroscopic MFCs.
Journal ArticleDOI
Exocellular electron transfer in anaerobic microbial communities.
Alfons J. M. Stams,Frank A. M. de Bok,Caroline M. Plugge,Miriam H. A. van Eekert,Jan Dolfing,Gosse Schraa +5 more
TL;DR: This review addresses the mechanisms of exocellular electron transfer in anaerobic microbial communities by addressing the fundamental differences but also similarities between electron transfer to another microorganism or to an insoluble electron acceptor.
Journal ArticleDOI
Current production and metal oxide reduction by Shewanella oneidensis MR-1 wild type and mutants (Applied and Environmental Microbiology (2007) 73, 21, (7003-7012))
Orianna Bretschger,Anna Obraztsova,Carter A. Sturm,In Seop Chang,Yuri A. Gorby,Samantha B. Reed,David E. Culley,Catherine L. Reardon,Soumitra Barua,Margaret F. Romine,Jizhong Zhou,Alexander S. Beliaev,Rachida Bouhenni,Daad A. Saffarini,Florian Mansfeld,Byung Hong Kim,James K. Fredrickson,Kenneth H. Nealson +17 more
TL;DR: Results showed that a few key cytochromes play a role in all of the processes but that their degrees of participation in each process are very different, suggesting a very complex picture of electron transfer to solid and soluble substrates by S. oneidensis MR-1.
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