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While Shewanella oneidensis is a bacterium that does not require oxygen for existence, it is vital to point out that there is a number of such bacteria in this family. Nearly 70 varieties of heterotrophs with various respiratory capabilities belong to the genus Shewanella (Ikeda et al., 2021). Shewanella oneidensis MR-1 is a typical type that has undergone extensive research on its capacity to regenerate a variety of electron acceptors, including oxygen, nitrates, sulfur compounds, and organic material (Ikeda et al., 2021). However, this bacterium is beyond a source of hydrocarbon fuels. Research has concentrated on its ability to be an electroactive microorganism that can discharge electrons to and receive electrons from bioelectrochemical systems to regulate internal redox levels (Ikeda et al., 2021). Notably, this ability is anticipated to be used with electro-fermentation to manufacture value-added compounds that are challenging to generate using traditional fermenting technologies efficiently.
Reference
Ikeda, S., Takamatsu, Y., Tsuchiya, M., Suga, K., Tanaka, Y., Kouzuma, A., & Watanabe, K. (2021). Shewanella oneidensis MR-1 as a bacterial platform for electro-biotechnology. Essays in Biochemistry, 65(2), 355-364.
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