Susceptibility of Listeria monocytogenes strains to disinfectants and chlorinated alkaline cleaners at cold temperatures

Adaptation and cross-adaptation of Listeria monocytogenes and Salmonella enterica to poultry decontaminants

“…As in the research being presented here, variations in the susceptibility of different Listeria and Salmonella strains to chemical biocides have been reported by other authors (Aase et al, 2000;Charnock, 2003;Heir et al, 2004;Gradel et al, 2005;Aarnisalo et al, 2007;Capita, 2007;EFSA, 2008). The substantial differences in susceptibility to decontaminants between bacterial species observed for CA, with Salmonella having a 3-fold higher MICs than Listeria, support previous observations, where CA showed higher activity against Gram-positive than Gram-negative bacteria (Del Río et al, 2007a, 2007b.…”

“…In such conditions it is possible that the organism's tolerance to the agent increases through adaptative responses, which may also be followed by cross-adaptation to other decontaminants. It is, however, important to bear in mind that the MICs tests were per- For interpretation see Table 1 Minimum inhibitory concentrations (MICs) of peroxyacetic acid (mg/ml) before and after exposing four bacterial strains to increasing concentrations of poultry decontaminants For interpretation see Table 1 formed in MH broth, which contains organic matter and causes inactivation of the agents (Aarnisalo et al, 2007). The MICs observed for ASC could be also influenced by compound evaporation.…”

Quaternary Ammonium Compounds (QACs) induced inactivation of Pseudomonas spp.: Effect of material surface

“…Based on Krysinski et al (1992) findings, the greatest susceptibility to antimicrobial agents of Lysteria monocytogenes occurred on polyethylene/polyurethane surfaces followed by polyethylene and stainless steel surfaces (Krysinski et al, 1992). However, in another study (Aarnisalo et al, 2007), a similar decrease in cell population was obserevd on both surfaces. Simões et al (2008) showed that treatment of glass surface with QACs increased the attachment of Pseudomonas fluorescens, but could also efficiently deactivate the bacteria remaining on the surface.…”

A concurrent diagnosis of microbiological food safety output and food safety management system performance: Cases from meat processing industries

“…Important control strategies that have been proposed in literature include adequate cooling, strict control of raw materials, appropriate cleaning and disinfection programs, accurate compartmentalization (integrated hygienic design), and compliance to sanitation procedures (e.g. Aarnisalo, Lunden, Korkeala, & Wirtanen, 2007;Keeratipibul & Lekroengsin, 2009;Keto-Timonen, Tolvanen, Lunden, & Korkeala, 2007;Lianou & Sofos, 2007;Tompkin, 2002).…”