Open AccessEffect of ZnO nanoparticle sizes and illumination on growth inhibition of Escherichia coli and Staphylococcus aureus bacteria in cultivation medium
Author(s) -
Jaroslav Jíra,
David Rutherford,
Júlia Míčová,
Z. Remeš,
Bohuslav Rezek
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1050/1/012007
Subject(s) - escherichia coli , staphylococcus aureus , zinc , bacteria , chemistry , nanoparticle , microbiology and biotechnology , food science , bacterial growth , antibacterial activity , biology , nanotechnology , materials science , biochemistry , organic chemistry , genetics , gene
We study antibacterial effects of the zinc oxide nanoparticles (ZnO NPs) in cultivation medium (Mueller-Hinton broth) on Gram-negative ( Escherichia coli ) and Gram-positive ( Staphylococcus aureus ) bacteria models. We compare synthesized ZnO hedgehog NPs and commercial ZnO NPs (50 nm and 20 μm nominal size) in different concentrations (1 mg/mL and 0.1 mg/mL). Results show that E. coli are more sensitive to the ZnO presence in the cultivation media than S. aureus . We also characterize influence of visible and UV light on the ZnO NP effects.