Characterization of Foodborne Pathogens: Antimicrobial Resistance, Genomic Aspects, Persistence and Virulence

A special issue of Antibiotics (ISSN 2079-6382).

Deadline for manuscript submissions: closed (31 May 2024) | Viewed by 2401

Special Issue Editors


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Guest Editor
Professor de Microbiologia Molecular de Alimentos, Universidade Federal de Mato Grosso, Cuiaba, Brazil
Interests: food microbiology; food safety; foodborne pathogens; animal health production

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Guest Editor
1. Department of Biological Sciences, University of Lethbridge, 4401 University Drive Lethbridge, Lethbridge Campus, Lethbridge, AB T1K 3M4, Canada
2. Postgraduate Program in Animal Science (PPGCA), Federal University of Mato Grosso (UFMT), Cuiabá 78060-900, Mato Grosso, Brazil
Interests: food microbiology; foodborne pathogens

Special Issue Information

Dear Colleagues,

Food contamination by foodborne pathogens represents one of the biggest current problems for society. Foodborne illness has an impact on health systems, and on the economy due to worker unavailability, and has an obvious impact on consumer health. Although several pathogen-inactivation strategies have been developed in recent years, both in food production processes and in human medicine, the fight against foodborne pathogens is similar to a race, wherein scientists develop inactivation strategies while bacteria develop means of survival to these methods. Thus, the study of antimicrobial resistance, resistance to physical and chemical methods of inactivation, and genetic components is crucial to ensure that we are in pole position. In this way, the present Special Issue aims to bring scientific contributions to the food microbiology field, in order to shed light on new methods of inactivation, virulence aspects, resistance and survivability to chemical and physical processes, and a microbiological perspective of contamination in epidemiologic studies.

Prof. Dr. Eduardo Eustáquio de Souza Figueiredo
Dr. Vinicius Silva Castro
Guest Editors

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Published Papers (1 paper)

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Research

11 pages, 1160 KiB  
Article
Optimizing the Antimicrobial Activity of Sodium Hypochlorite (NaClO) over Exposure Time for the Control of Salmonella spp. In Vitro
by Nathaly Barros Nunes, Jaqueline Oliveira dos Reis, Vinicius Silva Castro, Maxsueli Aparecida Moura Machado, Adelino da Cunha-Neto and Eduardo Eustáquio de Souza Figueiredo
Antibiotics 2024, 13(1), 68; https://doi.org/10.3390/antibiotics13010068 - 10 Jan 2024
Cited by 1 | Viewed by 1914
Abstract
Fish is a nutritionally rich product; however, it is easily contaminated by pathogenic microorganisms, such as Salmonella spp. Therefore, this study aimed to identify the best concentration of sodium hypochlorite (NaClO), exposure time, and water temperature that allow the most effective antimicrobial effect [...] Read more.
Fish is a nutritionally rich product; however, it is easily contaminated by pathogenic microorganisms, such as Salmonella spp. Therefore, this study aimed to identify the best concentration of sodium hypochlorite (NaClO), exposure time, and water temperature that allow the most effective antimicrobial effect on the viable population of Salmonella spp. Thus, Salmonella Enteritidis ATCC 13076 and Salmonella Schwarzengrund were exposed to different time frames, ranging from 5 min to 38.5 min, temperatures between 5 and 38.5 °C, and NaClO concentrations ranging from 0.36 to 6.36 ppm, through a central composite rotational design experiment (CCRD). The results demonstrated that the ATCC strain exhibited a quadratic response to sodium hypochlorite when combined with exposure time, indicating that initial contact would already be sufficient for the compound’s action to inhibit the growth of the mentioned bacteria. However, for S. Schwarzengrund (isolated directly from fish cultivated in aquaculture), both NaClO concentration and exposure time significantly influenced inactivation, following a linear pattern. This suggests that increasing the exposure time of NaClO could be an alternative to enhance Salmonella elimination rates in fish slaughterhouses. Thus, the analysis indicates that the Salmonella spp. strains used in in vitro experiments were sensitive to concentrations equal to or greater than the recommended ones, requiring a longer exposure time combined with the recommended NaClO concentration in the case of isolates from aquaculture. Full article
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