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Photoelectrochemical sterilization of microbial cells by semiconductor powders
FEMS Microbiology Letters · 1985 · Vol. 29(1-2) · pp. 211–214
Tadashi Matsunaga✉(Tokyo University of Agriculture and Technology)Ryozo Tomoda(Tokyo University of Agriculture and Technology)Toshiaki Nakajima(Tokyo University of Agriculture and Technology)Hitoshi Wake(Tokyo University of Agriculture and Technology)
Abstract
We report the novel concept of photochemical sterilization. Microbial cells were killed photoelectrochemically with semiconductor powder (platinum-loaded titanium oxide, TiO2/Pt). Coenzyme A, (CoA) in the whole cells was photo-electrochemically oxidized and, as a result, the respiration of cells was inhibited. Inhibition of respiratory activity caused death of the cells. Lactobacillus acidophilus, Saccharomyces cerevisiae and Escherichia coli (103 cells/ml respectively) were completely sterilized when they were incubated with TiO2/Pt particles under metal halide lamp irradiation for 60–120 min.
Advanced Photocatalysis TechniquesTiO2 Photocatalysis and Solar CellsAdvanced Nanomaterials in CatalysisSterilization (economics)ChemistryLactobacillus acidophilusPlatinumHalideMetalMicrobiologyIrradiationBacteriaBiochemistry
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References
Electrochemical Photolysis of Water at a Semiconductor Electrode
Nature · 1972 · 33,230 citations
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