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Article

Co-Occurrence of L. monocytogenes with Other Bacterial Genera and Bacterial Diversity on Cleaned Conveyor Surfaces in a Swine Slaughterhouse

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Chaire de Recherche en Salubrité des Viandes, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC J2S 2M2, Canada
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Centre de Recherche en Infectiologie Porcine et Avicole (CRIPA-FQRNT), Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC J2S 2M2, Canada
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Groupe de Recherche et d’Enseignement en Salubrité des Aliments (GRESA), Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC J2S 2M2, Canada
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Epidemiology of Zoonoses and Public Health Research Unit (GREZOSP), Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC J2S 2M2, Canada
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Pôle Agroalimentaire du Cnam, 22440 Ploufragan, France
*
Author to whom correspondence should be addressed.
Academic Editor: Edward Fox
Microorganisms 2022, 10(3), 613; https://doi.org/10.3390/microorganisms10030613
Received: 11 February 2022 / Revised: 4 March 2022 / Accepted: 9 March 2022 / Published: 14 March 2022
(This article belongs to the Section Food Microbiology)
Bacterial pathogens, such as Listeria monocytogenes, can show resistance to disinfection and persistence on working surfaces, permitting them to survive and contaminate food products. Persistence—a complex phenomenon involving interactions between many bacteria within a biofilm—is modulated by in situ characteristics. This study aimed to describe, in silico, the microbiota identified in a swine slaughterhouse after sanitation procedures to better understand the presence of L. monocytogenes on these surfaces. Molecular tools for characterization of microbial communities were used to assess the relative contribution of different bacteria resulting from this phenomenon, and the 16S rRNA sequencing method was used on samples from meat conveyor belt surfaces collected on four sampling visits to study the co-occurrence between L. monocytogenes and other bacteria. From the background microbiota, a total of six genera were found to be negatively correlated with Listeria spp., suggesting Listeria growth inhibition, competition, or at least an absence of shared habitats. Based on these results, a complete scenario of interactions of Listeria with components of background microbiota was established. This work contributes to identifying avenues that could prevent the growth and persistence of L. monocytogenes on food-processing surfaces. View Full-Text
Keywords: Listeria monocytogenes; microbiota; swine slaughterhouse Listeria monocytogenes; microbiota; swine slaughterhouse
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MDPI and ACS Style

Cherifi, T.; Arsenault, J.; Quessy, S.; Fravalo, P. Co-Occurrence of L. monocytogenes with Other Bacterial Genera and Bacterial Diversity on Cleaned Conveyor Surfaces in a Swine Slaughterhouse. Microorganisms 2022, 10, 613. https://doi.org/10.3390/microorganisms10030613

AMA Style

Cherifi T, Arsenault J, Quessy S, Fravalo P. Co-Occurrence of L. monocytogenes with Other Bacterial Genera and Bacterial Diversity on Cleaned Conveyor Surfaces in a Swine Slaughterhouse. Microorganisms. 2022; 10(3):613. https://doi.org/10.3390/microorganisms10030613

Chicago/Turabian Style

Cherifi, Tamazight, Julie Arsenault, Sylvain Quessy, and Philippe Fravalo. 2022. "Co-Occurrence of L. monocytogenes with Other Bacterial Genera and Bacterial Diversity on Cleaned Conveyor Surfaces in a Swine Slaughterhouse" Microorganisms 10, no. 3: 613. https://doi.org/10.3390/microorganisms10030613

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