2019
DOI: 10.3390/microorganisms7090280
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Disinfectant Susceptibility of Biofilm Formed by Listeria monocytogenes under Selected Environmental Conditions

Abstract: Listeria monocytogenes is a one of the most important food-borne pathogens. Its ability to form biofilm contributes to increased resistance to disinfectants and inefficient disinfection, posing a serious threat for the food industry, and in the end the consumer. The aim of this study was the comparison of the biofilm formation ability of L. monocytogenes strains on stainless steel, under different environmental conditions (temperature, pH, NaCl concentration, nutrients availability), and the assessment of biof… Show more

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Cited by 31 publications
(27 citation statements)
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“…In the present study, the four tested sanitizers were active against L. monocytogenes, although the quaternary ammonium based product (S1) presented higher efficiency when compared to the other tested compounds, based in the minimum inhibitory concentration (MIC) test and response presented by each selected isolate, as shown in Table 1. Similar results have been observed by Skowron et al (2019), comparing a quaternary ammonium-based product to products based on iodine, peracetic acid and hydrogen peroxide.…”
Section: Resultssupporting
confidence: 85%
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“…In the present study, the four tested sanitizers were active against L. monocytogenes, although the quaternary ammonium based product (S1) presented higher efficiency when compared to the other tested compounds, based in the minimum inhibitory concentration (MIC) test and response presented by each selected isolate, as shown in Table 1. Similar results have been observed by Skowron et al (2019), comparing a quaternary ammonium-based product to products based on iodine, peracetic acid and hydrogen peroxide.…”
Section: Resultssupporting
confidence: 85%
“…1, Table S1). In addition, results also demonstrated capacity of some isolates to grow biofilms at high salt concentrations (10% NaCl and 10% curing salts) when cultured at 37°C, considering that L. monocytogenes is relatively resistant to variations in salt concentrations, as described in previous studies (Jensen et al 2007;Caly et al 2009;Galvão et al 2012;Skowron et al 2019). NaCl can enhance the attachment of bacterial cells, depending on physicochemical properties of the surface, and it is known that polystyrene is uncharged and highly hydrophobic (Tresse et al 2007;Caly et al 2009).…”
Section: Resultssupporting
confidence: 65%
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“…The biofilm structure makes the eradication of bacteria from such a community much more difficult than their planktonic forms [16,36,37,38]. It has been shown (Smith and Hunter, 2008), that bacterial cells in the biofilm structure differ phenotypically from cells in the planktonic form, especially in the degree of resistance to disinfectants.…”
Section: Annals Of Agricultural and Environmental Medicinementioning
confidence: 99%
“…The bacterial resistance to antimicrobials in biofilm might be even 10-1,000 times higher [39]. The biofilm formation affects bacterial resistance to stress factors, including the disinfectants used to limit microbiological contamination of the food processing environment, thereby becoming a serious problem for food safety [37,40]. Resistance of biofilm to disinfectants varies depending on its structure, maturity,…”
Section: Annals Of Agricultural and Environmental Medicinementioning
confidence: 99%