Impedimetric evaluation of the efficiency of disinfectants against biofilms |
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| Authors: | D.S. Dhaliwal J.L. Cordier L.J. Cox |
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| Affiliation: | Nestec S.A., Dépt. Qualitéet SecuritéAlimentaire, Avenue Nestlé55, CH-1800 Vevey, Switzerland |
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| Abstract: | An impedimetric evaluation of disinfectant efficacy has shown that biofilms of Staphylococcus aureus, Escherichia coli, Salmonella enteritidis and Listeria mono-cytogenes attached to polyvinyl chloride (PVC), Teflon, Plexiglass, wood, rubber and stainless steel are more resistant than the same bacteria in suspension. Based on the activity against the test-organisms after 1, 3 and 5 min with exposures to 0.5, 1 and 2% of each disinfectant, the resistance towards disinfection was related to the type of hard-surface to which biofilms were attached. |
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