Antibacterial behavior of diamond nanoparticles against Escherichia coli

Authors

  • Jana Beranová,

    Corresponding author
    1. Institute of Physics, Academy of Sciences of the Czech Republic, Cukrovarnická 10, 16200 Prague, Czech Republic
    2. Department of Genetics and Microbiology, Faculty of Science, Charles University in Prague, Viničná 5, 12844 Prague, Czech Republic
    • Phone: +420 221951747, Fax: +420 221951724
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  • Gabriela Seydlová,

    1. Institute of Physics, Academy of Sciences of the Czech Republic, Cukrovarnická 10, 16200 Prague, Czech Republic
    2. Department of Genetics and Microbiology, Faculty of Science, Charles University in Prague, Viničná 5, 12844 Prague, Czech Republic
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  • Halyna Kozak,

    1. Institute of Physics, Academy of Sciences of the Czech Republic, Cukrovarnická 10, 16200 Prague, Czech Republic
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  • Štěpán Potocký,

    1. Institute of Physics, Academy of Sciences of the Czech Republic, Cukrovarnická 10, 16200 Prague, Czech Republic
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  • Ivo Konopásek,

    1. Department of Genetics and Microbiology, Faculty of Science, Charles University in Prague, Viničná 5, 12844 Prague, Czech Republic
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  • Alexander Kromka

    1. Institute of Physics, Academy of Sciences of the Czech Republic, Cukrovarnická 10, 16200 Prague, Czech Republic
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Abstract

In this study, we investigated the potential antibacterial properties of nanocrystalline diamond. In particular, we tested the effect of diamond nanoparticles (DNPs) on growth of the model gram-negative bacterium Escherichia coli on solid, nutrient-rich growth medium. We found that the presence of DNPs on agar plates significantly reduced the colony forming ability of E. coli. The antibacterial effect occurred in a concentration dependent manner and was conditional on the specific ratio of DNPs to the number of bacterial cells.

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