Effect of ZnO nanoparticles and illumination on growth inhibition of Escherichia coli and Staphylococcus aureus bacteria in cultivation medium.

0537556 - FZÚ 2021 CZ eng A - Abstract
Jíra, J. - Rutherford, D. - Remeš, Zdeněk - Rezek, B.
Effect of ZnO nanoparticles and illumination on growth inhibition of Escherichia coli and Staphylococcus aureus bacteria in cultivation medium.
Book of Abstracts of the 30^th Joint Seminar of the Development of Materials Science in Research and Education. Praha: Institute of Physics of the Czech Academy of Sciences, 2020 - (Kožíšek, Z.; Král, R.; Zemenová, P.). s. 33-33. ISBN 978-80-907237-1-9.
[Joint Seminar of the Development of Materials Science in Research and Education /30./. 07.09.2020-11.09.2020, Pavlov]
Institutional support: RVO:68378271
Keywords : ZnO * antibacterial effects * Escherichia coli * staphylococcus aureus
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)

This is a study of antibacterial effects of the ZnO nanoparticles in cultivation medium (MuellerHinton broth) on the two basic representatives of gram-negative (Escherichia coli) and grampositive (Staphylococcus aureus) bacteria. Our results show that the E. coli bacteria are more sensitive to the ZnO presence in the cultivation media than the S. aureus. We observed the reduction of viable bacteria in time during treatment compared to the reference and after 24 hours there was up to the six order decrease of colony forming units (CFU) number compared to the reference in case of the E. coli. The highest sensitivity of the E. coli was observed at the sample with our ZnO. In case of the S. aureus we observed approximately four order decrease of the CFU number at all samples with higher ZnO concentration. We also tested influence of light to the antibacterial effect.

Permanent Link: http://hdl.handle.net/11104/0315377