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    • JOYSHREE MAJI

      Articles written in Bulletin of Materials Science

    • Volume 43 All articles Published: 3 January 2020 Article ID 0025

      Synthesis and evaluation of antibacterial properties of magnesium oxide nanoparticles

      JOYSHREE MAJI SANJEEV PANDEY SOUMEN BASU

      More Details Abstract Fulltext PDF

      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 that6 $\mu$g ml$^{−1}$ of dose is sufficient for killing Bacillus sp. whereas it is 7.5 $\mu$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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