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Microorganisms
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Salmonella and Food Safety
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Salmonella and Food Safety

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Food Microbiology".

Deadline for manuscript submissions: 31 August 2025 | Viewed by 903

Special Issue Editors

Dr. Gerardo Vazquez-Marrufo

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Guest Editor
Centro Multidisciplinario de Estudios en Biotecnología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Michoacana de San Nicolás de Hidalgo, Tarímbaro 58893, Michoacán, Mexico
Interests: molecular epidemiology; Salmonella enterica; strain typing; fungi; biotechnology
Prof. Dr. Ma Soledad Vázquez Garcidueñas

E-Mail Website
Guest Editor
División de Estudios de Posgrado, Facultad de Ciencias Médicas y Biológicas, "Dr. Ignacio Chávez", Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58020, Michoacán, Mexico
Interests: molecular epidemiology; Salmonella enterica; comparative genomics; stress resistance; antibiotic resistance

Special Issue Information

Dear Colleagues,

Salmonella enterica is a worldwide animal and human pathogen responsible for gastrointestinal infections but also it can cause acute infections in other parts of the body. This bacterial species can survive for long periods of time outside its host, by colonizing inorganic and organic surfaces, waiting for the chance to enter a host body through an oral route. Because of its global public health relevance, it is important to understand its colonization strategies and biofilm development, stress tolerance and its relationship with virulence factors determinants, and antibiotic resistance. Physiological, biochemical, and molecular genetic studies associated with S. enterica physiological plasticity are relevant to gain knowledge on its mechanisms for preservation inside and outside of the host and resulting illnesses. Strategies to prevent biofilm formation, diagnosis of contamination of food matrices, and characterization of serotypes and genotypes of food isolates are also relevant in the analysis of S. enterica in the production chain. Studies of this nature, along the food chain, from farm to the fork, and even inside the host, are the focus of this Special Issue. Both original articles and reviews on the subject are welcome.

Topics of interest include, but are not limited to, the following:

  • Isolation of Salmonella enterica strains along the food chain and their biochemical, molecular, and/or physiological characterization;
  • Methods for identifying S. enterica along the food chain;
  • S. enterica serotypes and/or genotypes incidence along the food chain;
  • Omics and multiomics analysis of S. enterica strains isolated along the food chain;
  • Stress resistance mechanisms of S. enterica strains isolated along the food chain;
  • Antibiotic resistance in S. enterica strains isolated along the food chain.

Dr. Gerardo Vazquez-Marrufo
Prof. Dr. Ma Soledad Vázquez Garcidueñas
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Microorganisms is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Salmonella enterica
  • serotype
  • genotype
  • stress resistance
  • biofilm
  • food contamination
  • virulence determinants
  • antibiotic resistance
  • omics studies
  • diagnostics

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Published Papers (2 papers)

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Research

13 pages, 1737 KiB  
Article
Rapid and Sensitive Detection of Salmonella via Immunomagnetic Separation and Nanoparticle-Enhanced SPR
by Fengzhu Liang, Yuzhen Li, Yan Cui and Jianhua Zhang
Microorganisms 2025, 13(8), 1914; https://doi.org/10.3390/microorganisms13081914 - 16 Aug 2025
Viewed by 289
Abstract
The widespread prevalence of Salmonella underscores the urgent need for rapid, sensitive, and reliable detection methods to ensure food safety and protection of public health. In this study, we successfully developed an integrated detection system that combines immunomagnetic separation with surface plasmon resonance [...] Read more.
The widespread prevalence of Salmonella underscores the urgent need for rapid, sensitive, and reliable detection methods to ensure food safety and protection of public health. In this study, we successfully developed an integrated detection system that combines immunomagnetic separation with surface plasmon resonance (SPR) analysis. This system achieved high capture efficiencies, exceeding 96.04% in phosphate-buffered saline and over 91.66% in milk samples artificially spiked with S. Typhimurium at concentrations below 4.2 × 104 CFU/mL. However, direct SPR detection of the isolated S. Typhimurium showed limited sensitivity, with a limit of detection (LOD) of 4.2 × 107 CFU/mL. Incorporating a sandwich assay with antibody-conjugated gold nanoparticles significantly enhanced sensitivity, lowering the LOD by six orders of magnitude to 4.2 × 101 CFU/mL. The whole integrated process, integrating immunomagnetic separation with SPR analysis, was completed within 50 min. These results demonstrate that this AuNP-enhanced SPR platform offers both the rapidity and sensitivity essential for effective monitoring of food safety and traceability in Salmonella-related foodborne outbreaks, particularly in products such as milk. Full article
(This article belongs to the Special Issue Salmonella and Food Safety)
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17 pages, 1331 KiB  
Article
Characterization and Antimicrobial Resistance of Non-Typhoidal Salmonella from Poultry Carcass Rinsates in Selected Abattoirs of KwaZulu Natal, South Africa
by Bongi Beatrice Mankonkwana, Evelyn Madoroba, Kudakwashe Magwedere and Patrick Butaye
Microorganisms 2025, 13(8), 1786; https://doi.org/10.3390/microorganisms13081786 - 31 Jul 2025
Viewed by 403
Abstract
Contaminated poultry is one of the major sources of food-borne non-typhoidal Salmonella (NTS). The aim of this study was to evaluate the presence of Salmonella along the slaughter process in low- and high-throughput poultry abattoirs in South Africa and to determine their characteristics. [...] Read more.
Contaminated poultry is one of the major sources of food-borne non-typhoidal Salmonella (NTS). The aim of this study was to evaluate the presence of Salmonella along the slaughter process in low- and high-throughput poultry abattoirs in South Africa and to determine their characteristics. Samples were collected from 500 chicken carcass rinsates at various processing stages in three abattoirs. Salmonella detection and identification was conducted in accordance with the ISO 6579 methodology. NTS serotyping was performed with serotype-specific PCRs. The Kirby–Bauer disk diffusion method was used to determine antimicrobial resistance in Salmonella. PCR was used to analyze thirteen antimicrobial genes and four virulence genes. Salmonella spp. was detected in 11.8% (59/500; CI: 9.5–15) of the samples tested. The predominant serovars were Salmonella Enteritidis (n = 21/59; 35.59%) and Salmonella Typhimurium (n = 35; 59.32%). Almost all Salmonella isolates were susceptible to all tested antimicrobials except three. Despite the low resistance to tetracyclines at the phenotypic level, approximately half of the strains carried tetA genes, which may be due to “silent” antimicrobial resistance genes. Diverse virulence genes were detected among the confirmed NTS serotypes. We found a predominance of S. Enteritidis and S. Typhimurium from chicken carcasses with diverse virulence and resistance genes. As we detected differences between the slaughterhouses, an in-depth study should be performed on the risk of Salmonella in low- and high-throughput abattoirs. The integrated monitoring and surveillance of NTS in poultry is warranted in South Africa to aid in the design of mitigation strategies. Full article
(This article belongs to the Special Issue Salmonella and Food Safety)
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