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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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 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.
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 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.
Survival of Biofilm‐Associated Legionella pneumophila Exposed to Various Stressors
Vatansever, Cansu (Autor:in) / Türetgen, Irfan (Autor:in)
Water Environment Research ; 87 ; 227-232
01.03.2015
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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