Survival of biofilm-associated Legionella pneumophila exposed to various stressors
Biofilm is crucial for the multiplication and survival of Legionella pneumophila. The survival after different stressors of biofilm-associated L. pneumophila was evaluated during 150 days in this study. Mixed biofilms were allowed to develop on coupons in a biofilm reactor, which was experimentally...
| Veröffentlicht in: | Water environment research : a research publication of the Water Environment Federation. - 1998. - 87(2015), 3 vom: 03. März, Seite 227-32 |
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| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2015
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| Zugriff auf das übergeordnete Werk: | Water environment research : a research publication of the Water Environment Federation |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't Chloramines Disinfectants Water 059QF0KO0R Sodium Chloride 451W47IQ8X chloramine KW8K411A1P |
| Zusammenfassung: | Biofilm is crucial for the multiplication and survival of Legionella pneumophila. The survival after different stressors of biofilm-associated L. pneumophila was evaluated during 150 days in this study. Mixed biofilms were allowed to develop on coupons in a biofilm reactor, which was experimentally infected with L. pneumophila. A dose of 2 ppm of monochloramine was found ineffective to kill younger (60 days) biofilm-associated L. pneumophila, whereas shock treatment (500 and 1000 ppm) was found to be significantly successful, as expected. Also, short exposure to 60 °C was insufficient to kill all young L. pneumophila within biofilms. A significant amount of young L. pneumophila bacteria also resisted pH 11 and 3 molar salt solution. No significant change was observed after exposure to 4 °C, ultra pure water and pH 5. Interestingly, L. pneumophila bacteria in biofilm became more sensitive after 90 days |
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| Beschreibung: | Date Completed 24.04.2015 Date Revised 23.09.2019 published: Print Citation Status MEDLINE |
| ISSN: | 1554-7531 |