title: [Photoinduced bactericidal activity of TiO2 films].
abstract: A decline 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 following a 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 degrees C restores the photoinduced bactericidal activity to its initial state.
authors: S N
authors: SN
authors: Pleskova
authors: I S
authors: IS
authors: Golubeva
authors: Iu K
authors: IuK
authors: Verevkin
authors: E A
authors: EA
authors: Pershin
authors: V N
authors: VN
authors: Burenina
authors: V V
authors: VV
authors: Korolikhin
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000494:pharmacology*; D002452:Cell Count; D004926:Escherichia coli / Q000187:drug effects / Q000254:growth & development; D006358:Hot Temperature; D006859:Hydrogen / Q000737:chemistry; D057927:Hydrophobic and Hydrophilic Interactions / Q000528:radiation effects; D050296:Microbial Viability; D010100:Oxygen / Q000737:chemistry; D010782:Photolysis / Q000528:radiation effects; D017319:Photosensitizing Agents / Q000737:chemistry / Q000494:pharmacology*; D013211:Staphylococcus aureus / Q000187:drug effects / Q000254:growth & development; D013212:Staphylococcus epidermidis / Q000187:drug effects / Q000254:growth & development; D013499:Surface Properties / Q000187:drug effects / Q000528:radiation effects; D014025:Titanium / Q000737:chemistry / Q000494:pharmacology*; D014466:Ultraviolet Rays
chemical_list: D000900:Anti-Bacterial Agents; D017319:Photosensitizing Agents; C009495:titanium dioxide; D006859:Hydrogen; D014025:Titanium; D010100:Oxygen