Biogenic synthesis of selenium nanoparticles by Shewanella sp. HN-41 using a modified bioelectrochemical system

Background: Synthesis of selenium nanoparticles from selenite by Shewanella sp. HN-41 demonstrated that particle size depended on the reaction time and biomass of cells. The slow reaction and low biomass tended to form small particles. In this study, Shewanella sp. HN-41 was introduced into the anod...

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Autores principales:	Cuong Tu Ho, Thi-Hanh Nguyen, Thuong-Thuong Lam, Dang-Quang Le, Canh Xuan Nguyen, Ji-hoon Lee, Hor-Gil Hur
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Anode Bioelectrochemical system Biogenic Cathode Nanoparticles Nanosized selenium Biotechnology TP248.13-248.65 Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/84eb5b3e9b2b46fcab108c9fee6d049c
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spelling	oai:doaj.org-article:84eb5b3e9b2b46fcab108c9fee6d049c2021-11-06T04:19:57ZBiogenic synthesis of selenium nanoparticles by Shewanella sp. HN-41 using a modified bioelectrochemical system0717-345810.1016/j.ejbt.2021.07.004https://doaj.org/article/84eb5b3e9b2b46fcab108c9fee6d049c2021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0717345821000373https://doaj.org/toc/0717-3458Background: Synthesis of selenium nanoparticles from selenite by Shewanella sp. HN-41 demonstrated that particle size depended on the reaction time and biomass of cells. The slow reaction and low biomass tended to form small particles. In this study, Shewanella sp. HN-41 was introduced into the anode of a nonexternal circuit bioelectrochemical system (nec_BES) to convert chemical energy from lactate to low electron current to the cathode, where selenite was reduced. Results: Our experiment with two systems, one bioelectrochemical system with a cathode flushed with nitrogen and the other with a no-nitrogen-flushing cathode, showed that the former could not produce Se nanoparticles after 21 d, but the latter formed them with an average size of 37.7 nm. The SEM and TEM images demonstrated that the particle size of 10 nm occupied over 10% and most of the particles were in the range of 30–60 nm. The XRD result and SAED image demonstrated no clear peaks of crystal and proved that the Se nanoparticles are amorphous. Conclusions: The clean Se nanoparticles were synthesized and completely separated from bacterial cells in the bioelectrochemical system. This study opened a new approach for the biological synthesis of metal nanoparticles. Finally, the Se products in the range of 30–60 nm can be tested for antimicrobial activities in medical applications.How to cite: Ho CT, Nguyen T-H, Lam T-T, et al. Biogenic synthesis of selenium nanoparticles by Shewanella sp. HN-41 using a modified bioelectrochemical system. Electron J Biotechnol 2021;54. https://doi.org/10.1016/j.ejbt.2021.07.004Cuong Tu HoThi-Hanh NguyenThuong-Thuong LamDang-Quang LeCanh Xuan NguyenJi-hoon LeeHor-Gil HurElsevierarticleAnodeBioelectrochemical systemBiogenicCathodeNanoparticlesNanosized seleniumBiotechnologyTP248.13-248.65Biology (General)QH301-705.5ENElectronic Journal of Biotechnology, Vol 54, Iss , Pp 1-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Anode Bioelectrochemical system Biogenic Cathode Nanoparticles Nanosized selenium Biotechnology TP248.13-248.65 Biology (General) QH301-705.5
spellingShingle	Anode Bioelectrochemical system Biogenic Cathode Nanoparticles Nanosized selenium Biotechnology TP248.13-248.65 Biology (General) QH301-705.5 Cuong Tu Ho Thi-Hanh Nguyen Thuong-Thuong Lam Dang-Quang Le Canh Xuan Nguyen Ji-hoon Lee Hor-Gil Hur Biogenic synthesis of selenium nanoparticles by Shewanella sp. HN-41 using a modified bioelectrochemical system
description	Background: Synthesis of selenium nanoparticles from selenite by Shewanella sp. HN-41 demonstrated that particle size depended on the reaction time and biomass of cells. The slow reaction and low biomass tended to form small particles. In this study, Shewanella sp. HN-41 was introduced into the anode of a nonexternal circuit bioelectrochemical system (nec_BES) to convert chemical energy from lactate to low electron current to the cathode, where selenite was reduced. Results: Our experiment with two systems, one bioelectrochemical system with a cathode flushed with nitrogen and the other with a no-nitrogen-flushing cathode, showed that the former could not produce Se nanoparticles after 21 d, but the latter formed them with an average size of 37.7 nm. The SEM and TEM images demonstrated that the particle size of 10 nm occupied over 10% and most of the particles were in the range of 30–60 nm. The XRD result and SAED image demonstrated no clear peaks of crystal and proved that the Se nanoparticles are amorphous. Conclusions: The clean Se nanoparticles were synthesized and completely separated from bacterial cells in the bioelectrochemical system. This study opened a new approach for the biological synthesis of metal nanoparticles. Finally, the Se products in the range of 30–60 nm can be tested for antimicrobial activities in medical applications.How to cite: Ho CT, Nguyen T-H, Lam T-T, et al. Biogenic synthesis of selenium nanoparticles by Shewanella sp. HN-41 using a modified bioelectrochemical system. Electron J Biotechnol 2021;54. https://doi.org/10.1016/j.ejbt.2021.07.004
format	article
author	Cuong Tu Ho Thi-Hanh Nguyen Thuong-Thuong Lam Dang-Quang Le Canh Xuan Nguyen Ji-hoon Lee Hor-Gil Hur
author_facet	Cuong Tu Ho Thi-Hanh Nguyen Thuong-Thuong Lam Dang-Quang Le Canh Xuan Nguyen Ji-hoon Lee Hor-Gil Hur
author_sort	Cuong Tu Ho
title	Biogenic synthesis of selenium nanoparticles by Shewanella sp. HN-41 using a modified bioelectrochemical system
title_short	Biogenic synthesis of selenium nanoparticles by Shewanella sp. HN-41 using a modified bioelectrochemical system
title_full	Biogenic synthesis of selenium nanoparticles by Shewanella sp. HN-41 using a modified bioelectrochemical system
title_fullStr	Biogenic synthesis of selenium nanoparticles by Shewanella sp. HN-41 using a modified bioelectrochemical system
title_full_unstemmed	Biogenic synthesis of selenium nanoparticles by Shewanella sp. HN-41 using a modified bioelectrochemical system
title_sort	biogenic synthesis of selenium nanoparticles by shewanella sp. hn-41 using a modified bioelectrochemical system
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/84eb5b3e9b2b46fcab108c9fee6d049c
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Biogenic synthesis of selenium nanoparticles by Shewanella sp. HN-41 using a modified bioelectrochemical system

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