| Disinfection of Legionella pneumophila by photocatalytic oxidation. | |
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MedLine Citation:
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PMID: 17224169 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Photocatalytic oxidation (PCO) was proven to be efficacious in the inactivation of Legionella pneumophila serogroup 1 Strains 977, 1009, 1014 and ATCC 33153. The local (Strains 997, 1009 and 1014) and ATCC (Strain 33153) strains showed sensitivity differences towards PCO. The inactivation mechanisms of PCO were investigated by transmission and scanning electron microscopy by which PCO was found to disintegrate the cells eventually. Before the disintegration, there was lipid peroxidation of outer and cytoplasmic membrane causing holes formation and leading to the entry of OH into the cells to oxidize the intracellular components. Fatty acid profile analysis found that the amount of saturated, 16-carbon branched-chain fatty acid, which is predominant in Legionella, decreased in the surviving populations from PCO. A relationship between the amount of this fatty acid and the PCO sensitivity of the tested strains was also observed. Mineralization of cells by PCO was proven by total organic carbon analysis. |
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Authors:
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Y W Cheng; Raphael C Y Chan; P K Wong |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't Date: 2007-01-16 |
Journal Detail:
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Title: Water research Volume: 41 ISSN: 0043-1354 ISO Abbreviation: Water Res. Publication Date: 2007 Feb |
Date Detail:
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Created Date: 2007-01-29 Completed Date: 2007-04-20 Revised Date: 2010-10-01 |
Medline Journal Info:
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Nlm Unique ID: 0105072 Medline TA: Water Res Country: England |
Other Details:
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Languages: eng Pagination: 842-52 Citation Subset: IM |
Affiliation:
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Department of Biology, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, China. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Antigens, Bacterial
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metabolism Catalysis Cell Membrane / metabolism Disinfection / instrumentation, methods* Fatty Acids / analysis Legionella pneumophila* / classification, growth & development, metabolism Legionnaires' Disease / prevention & control* Lipid Peroxidation Microscopy, Electron, Scanning Microscopy, Electron, Transmission Oxidation-Reduction* Photolysis* |
| Chemical | |
Reg. No./Substance:
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0/Antigens, Bacterial; 0/Fatty Acids |
| Comments/Corrections | |
Erratum In:
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Water Res. 2010 Mar;44(6):2075 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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