A model system for evaluating surface disinfection in dairy factory environments
2010
Abstract A model system was developed for evaluating the efficacy of disinfectants for inactivating bacteria present in biofilms on surfaces within dairy factory environments. Mixed culture biofilms of six dairy factory isolates (pseudomonads, coliforms and presumptive staphylococci) were generated on factory floor tiles and subjected to up to three fouling and cleaning (FC) cycles. Disinfectants (hypochlorite, peroxyacetic acid-, acid anionic- and quaternary ammonium compound (QUAT)-based products) were applied after cleaning at the supplier's recommended concentrations. Bacterial groups were enumerated using selective agar media. All disinfectants significantly ( p
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