Microorganisms and Food Safety

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

Deadline for manuscript submissions: closed (31 January 2024) | Viewed by 5827

Special Issue Editor


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Guest Editor
Department of Functional and Organic Food, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences, Nowoursynowska 159c, 02-776 Warsaw, Poland
Interests: organic fruits; food production; food quality; food safety; food chemistry; food composition; food security; environmental footprint of agronomic systems and food production; sustainable food systems; sustainable diet
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Special Issue Information

Dear Colleagues,

This Special Issue focuses on various aspects of microorganisms in relation to food safety, along the food chain—in production, processing, preservation, storage, consumption of food raw materials and products. Microorganisms play an important role in many branches of food production and processing (i.e., wine, beer, bakery, dairy products, various fermented foods, etc.). On the other hand, the development of pathogenic microflora in foods is considered one of the main causes of food loss and waste nowadays and is an important part of food safety, leading to economic losses and posing serious health risks. Even though novel technologies, good hygienic practices, and effective traceability systems significantly contribute to the prevention of food outbreaks, food remains susceptible to microbial growth. This Special Issue aims to touch all these areas—from beneficial microorganisms and their health-promoting products in foods to pathogenic microbials involved in food spoilage and contamination; from traditional to very modern solutions of preventing and dealing with pathogenic microbials growth; and from known to recently discovered microorganism species. It also covers problems of foodborne diseases, outbreaks and associated symptoms related to microorganisms in foods. It looks into traditional and innovative methods and practices that could help to ensure long shelf-life and microbial safety of various traditional and novel foods, while sustaining their high quality and nutritional value. The main goal of this Special Issue is to report on state of the art, but also to identify research gaps that need further investigation to contribute to the production of nutritious and microbiologically safe foods.

We invite researchers to contribute original studies and review articles covering all of the abovementioned aspects.

We look forward to receiving your contributions.

Dr. Dominika Średnicka-Tober
Guest Editor

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Keywords

  • food safety
  • microbiome
  • food pathogens
  • pathogenic bacteria
  • food loss
  • beneficial microorganisms
  • food spoilage

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Published Papers (2 papers)

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Research

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16 pages, 8468 KiB  
Article
Comparative Analysis of Growth, Survival, and Virulence Characteristics of Listeria monocytogenes Isolated from Imported Meat
by Xinye Pan, Jinling Shen, Yi Hong, Yufan Wu, Dehua Guo, Lina Zhao, Xiangfeng Bu, Leijie Ben and Xiang Wang
Microorganisms 2024, 12(2), 345; https://doi.org/10.3390/microorganisms12020345 - 7 Feb 2024
Cited by 2 | Viewed by 1525
Abstract
Listeria monocytogenes is an important foodborne pathogen with worldwide prevalence. Understanding the variability in the potential pathogenicity among strains of different subtypes is crucial for risk assessment. In this study, the growth, survival, and virulence characteristics of 16 L. monocytogenes strains isolated from [...] Read more.
Listeria monocytogenes is an important foodborne pathogen with worldwide prevalence. Understanding the variability in the potential pathogenicity among strains of different subtypes is crucial for risk assessment. In this study, the growth, survival, and virulence characteristics of 16 L. monocytogenes strains isolated from imported meat in China (2018–2020) were investigated. The maximum specific growth rate (μmax) and lag phase (λ) were evaluated using the time-to-detection (TTD) method and the Baranyi model at different temperatures (25, 30, and 37 °C). Survival characteristics were determined by D-values and population reduction after exposure to heat (60, 62.5, and 65 °C) and acid (HCl, pH = 2.5, 3.5, and 4.5). The potential virulence was evaluated via adhesion and invasion to Caco-2 cells, motility, and lethality to Galleria mellonella. The potential pathogenicity was compared among strains of different lineages and subtypes. The results indicate that the lineage I strains exhibited a higher growth rate than the lineage II strains at three growth temperatures, particularly serotype 4b within lineage I. At all temperatures tested, serotypes 1/2a and 1/2b consistently demonstrated higher heat resistance than the other subtypes. No significant differences in the log reduction were observed between the lineage I and lineage II strains at pH 2.5, 3.5, and 4.5. However, the serotype 1/2c strains exhibited significantly low acid resistance at pH 2.5. In terms of virulence, the lineage I strains outperformed the lineage II strains. The invasion rate to Caco-2 cells and lethality to G. mellonella exhibited by the serotype 4b strains were higher than those observed in the other serotypes. This study provides meaningful insights into the growth, survival, and virulence of L. monocytogenes, offering valuable information for understanding the correlation between the pathogenicity and subtypes of L. monocytogenes. Full article
(This article belongs to the Special Issue Microorganisms and Food Safety)
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Review

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27 pages, 1853 KiB  
Review
Exploring Cereal Metagenomics: Unravelling Microbial Communities for Improved Food Security
by Kedibone Masenya, Madira Coutlyne Manganyi and Tshegofatso Bridget Dikobe
Microorganisms 2024, 12(3), 510; https://doi.org/10.3390/microorganisms12030510 - 2 Mar 2024
Cited by 4 | Viewed by 2734
Abstract
Food security is an urgent global challenge, with cereals playing a crucial role in meeting the nutritional requirements of populations worldwide. In recent years, the field of metagenomics has emerged as a powerful tool for studying the microbial communities associated with cereal crops [...] Read more.
Food security is an urgent global challenge, with cereals playing a crucial role in meeting the nutritional requirements of populations worldwide. In recent years, the field of metagenomics has emerged as a powerful tool for studying the microbial communities associated with cereal crops and their impact on plant health and growth. This chapter aims to provide a comprehensive overview of cereal metagenomics and its role in enhancing food security through the exploration of beneficial and pathogenic microbial interactions. Furthermore, we will examine how the integration of metagenomics with other tools can effectively address the adverse effects on food security. For this purpose, we discuss the integration of metagenomic data and machine learning in providing novel insights into the dynamic interactions shaping plant-microbe relationships. We also shed light on the potential applications of leveraging microbial diversity and epigenetic modifications in improving crop resilience and yield sustainability. Ultimately, cereal metagenomics has revolutionized the field of food security by harnessing the potential of beneficial interactions between cereals and their microbiota, paving the way for sustainable agricultural practices. Full article
(This article belongs to the Special Issue Microorganisms and Food Safety)
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