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- W1981932396 abstract "The antibacterial efficiency of longwave UV-irradiated TiO(2) thin films as well as the ultrastructural damage on bacterial cells was evaluated using Pseudomonas aeruginosa as a model. The quantitative antibacterial efficiency assays showed a bacterial inhibition in the range of 32-72% at different times of irradiation. Transmission electron microscopy (TEM) was used to detect the effect of irradiation of TiO(2) thin films on the ultrastructure of the bacterial cell in order to reveal possible cellular damage. After 40 min irradiation, an abnormal cellular division was observed: instead of a normal septum, an 'elongated bridge' was formed. At a longer irradiation time, wavy structures all around the outer cell membrane were observed, and also some bubble-like protuberances, which expelled inner material. The mechanism of irreversible bacterial cell damage caused by the photocatalytic effect of TiO(2) could be related to abnormal cell division, aside from the reported physicochemical alteration of the cell membrane." @default.
- W1981932396 created "2016-06-24" @default.
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- W1981932396 date "2003-04-01" @default.
- W1981932396 modified "2023-09-25" @default.
- W1981932396 title "TEM evidence of ultrastructural alteration on Pseudomonas aeruginosa by photocatalytic TiO2 thin films" @default.
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- W1981932396 doi "https://doi.org/10.1016/s1011-1344(03)00054-x" @default.
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