Abstract
A decrease in CFU of gram-positive and gram-negative bacteria on the surface of UV illuminated TiO2 films (wavelength of 380 nm) is shown. A 29, 45, and 47% decrease in bacterial viability of Staphylococcus aureus, Staphylococcus epidermidis, and Escherichia coli, respectively, was seen after 12-min exposition. It was first discovered that the reuse of TiO2 films to test a bacterial suspension for viability removes UV-induced bactericidal activity. However, annealing of TiO2 at a temperature above 400°C restores the photoinduced bactericidal activity to its initial state.
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Original Russian Text © S.N. Pleskova, I.S. Golubeva, Yu.K. Verevkin, E.A. Pershin, V.N. Burenina, V.V. Korolichin, 2011, published in Prikladnaya Biokhimiya i Mikrobiologiya, 2011, Vol. 47, No. 1, pp. 28–32.
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Pleskova, S.N., Golubeva, I.S., Verevkin, Y.K. et al. Photoinduced bactericidal activity of TiO2 films. Appl Biochem Microbiol 47, 23–26 (2011). https://doi.org/10.1134/S0003683811010091
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DOI: https://doi.org/10.1134/S0003683811010091