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Sci Rep

Title:		Electricity from lignocellulosic substrates by thermophilic Geobacillus species
Author(s):		Shrestha N; Tripathi AK; Govil T; Sani RK; Urgun-Demirtas M; Kasthuri V; Gadhamshetty V;
Address:		"Civil and Environmental Engineering, South Dakota School of Mines and Technology, Rapid City, SD, 57701, USA. shrestha@rose-hulman.edu. Department of Civil and Environmental Engineering, Rose-Hulman Institute of Technology, Terre Haute, IN, 47803, USA. shrestha@rose-hulman.edu. Department of Biological and Chemical Engineering, South Dakota School of Mines and Technology, Rapid City, SD, 57701, USA. Department of Biological and Chemical Engineering, South Dakota School of Mines and Technology, Rapid City, SD, 57701, USA. rajesh.sani@sdsmt.edu. BuGReMeDEE Consortium, South Dakota School of Mines and Technology, Rapid City, SD, 57701, USA. rajesh.sani@sdsmt.edu. Energy Global Security Division, Argonne National Laboratory, Lemont, IL, 60439, USA. Biotechnology and Planetary Protection Group, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, 91109, USA. Civil and Environmental Engineering, South Dakota School of Mines and Technology, Rapid City, SD, 57701, USA. Venkata.Gadhamshetty@sdsmt.edu. BuGReMeDEE Consortium, South Dakota School of Mines and Technology, Rapid City, SD, 57701, USA. Venkata.Gadhamshetty@sdsmt.edu"
Journal Title:		Sci Rep
Year:		2020
Volume:		20201012
Issue:		1
Page Number:		17047 -
DOI:		10.1038/s41598-020-72866-y
ISSN/ISBN:		2045-2322 (Electronic) 2045-2322 (Linking)
Abstract:		"Given our vast lignocellulosic biomass reserves and the difficulty in bioprocessing them without expensive pretreatment and fuel separation steps, the conversion of lignocellulosic biomass directly into electricity would be beneficial. Here we report the previously unexplored capabilities of thermophilic Geobacillus sp. strain WSUCF1 to generate electricity directly from such complex substrates in microbial fuel cells. This process obviates the need for exogenous enzymes and redox mediator supplements. Cyclic voltammetry and chromatography studies revealed the electrochemical signatures of riboflavin molecules that reflect mediated electron transfer capabilities of strain WSUCF1. Proteomics and genomics analysis corroborated that WSUCF1 biofilms uses type-II NADH dehydrogenase and demethylmenaquinone methyltransferase to transfer the electrons to conducting anode via the redox active pheromone lipoproteins localized at the cell membrane"
Keywords:		*Bioelectric Energy Sources Biomass *Electricity Geobacillus/*metabolism Lignin/*metabolism;
Notes:		"MedlineShrestha, Namita Tripathi, Abhilash Kumar Govil, Tanvi Sani, Rajesh Kumar Urgun-Demirtas, Meltem Kasthuri, Venkateswaran Gadhamshetty, Venkataramana eng Research Support, U.S. Gov't, Non-P.H.S. England 2020/10/14 Sci Rep. 2020 Oct 12; 10(1):17047. doi: 10.1038/s41598-020-72866-y"