Abstract
In this paper we studied the efficiency of magnesium oxide (MgO) nanoparticles with an average size of 27 nm synthesized by a simple soft chemical method, in killing both Gram negative and Gram positive pathogenic bacteria. The antibacterial activity was determined by a minimum inhibitory concentration technique, agar cup method and live count technique. These nanoparticles show the maximum antibacterial activity towards Bacillus sp. in comparison with Escherichia coli. Transmission electron microscopy analyses of the treated-bacterial strains showed a morphological deformation with increased cell wall disruption. From the analysis of the antibacterial activity of MgO nanoparticles it is revealed that \(6\,\upmu \hbox {g ml}^{-1}\) of dose is sufficient for killing Bacillus sp. whereas it is \(7.5\,\upmu \hbox {g ml}^{-1}\) for E. coli. These doses may be used in medical application. MgO nanoparticles could be used as antibacterial agents after completion of successful in vivo trials.
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This work has been accomplished under the funding of C.O.E. of National Institute of Technology, Durgapur and Botany Department of B.B. College, Asansol. The authors concede the principal assistance accepted from the above organizations.
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Maji, J., Pandey, S. & Basu, S. Synthesis and evaluation of antibacterial properties of magnesium oxide nanoparticles. Bull Mater Sci 43, 25 (2020). https://doi.org/10.1007/s12034-019-1963-5
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DOI: https://doi.org/10.1007/s12034-019-1963-5