Researchers show how the advanced sequence and natural compounds form the ongoing battle against deadly food diseases, from Listeria hiding in Biofilm to Frankincense tobacco that kill harmful germs.
Study: Zoos pathogens in food: New progresses and editorial knowledge. Credit Picture: Corona Borealis Studio/Shutterstock.com
A recent special issue published in Food It highlights the current challenges and recent developments in the detection and control of pathogens in food and food environments.
The disease transmitted by food and the consequences of
About 600 million people develop food diseases after eating contaminated foods, including about 420,000 die. Children under the age of five account for almost 30% of all deaths. Therefore, food contamination is considered a significant threat to public health.
People from low and medium -income countries develop food diseases due to inappropriate food storage, poor hygiene practices, infrastructure shortages and inconsistent regulatory enforcement. The increasing appearance of dietary multiple -drug -resistant pathogens has caused the need for surveillance, consumer training and antimicrobial evaluations.
Pathogens, including Escherichia coli; Salmonella spp., Listeria monocytogenes, and University Spp., cause food Disease with widespread symptoms of mild gastrointestinal discomfort in more serious, life -threatening conditions. Viral agents, including Norovirus and hepatitis A, are also significant threats to food safety. Some zoos pathogens significantly affect vulnerable populations, including infants, children, elderly adults and immunosuppresses. In addition to bacteria, parasites (Yarda Lambia and Entamoeba Histolytica, and Tadona Spp.) and fungi (eg, Penicle; Hollow; Aspergillus, and Fusarium) They are pathogenic to humans and can cause food -related diseases.
Normal and molecular adaptation of pathogenic foods
The editorial summarizes studies in which researchers have explored the normal and molecular adjustment of pathogens under environmental stress. In a study mentioned, the researchers used 1D electrophoresis, 2D-page and consecutive mass spectrometry to identify the proteon configuration in the L. monocytogenes St7 in response to extremely acidic and saline conditions and extremely low temperatures. This study emphasized the specific expression of infectivity factors, such as internal A and Listerlysin O.
Stress reactions and protein expression standards vary according to the environmental factors related to storage and food production. Future research should incorporate bioinformatic tools, such as Varulentpred and Vaxijen V.2.0, to characterize proteins in terms of infectivity and immune potential. The gene processing tools, including recombinant CRISPR-CAS systems, can be used for targeted gene manipulation.
Recent studies have shown adaptation and unique pathogenic potential, thereby emphasizing the importance of the combination of protein and transcriptional data to determine infectivity in addition to genomic forecasts.
The highest appearance of informal large. monocytogene (ALM) Executives from previous estimates could be attributed to environmental factors and processing factors in both animals and plant food chains. This strain presents a separate phenotypic and genotypical profile, including the lack of hemolysis, which is associated with infectivity genes (eg. Prfa; inlb; Mpl). In the future, researchers could use phenotypic fingerprints to distinguish Alm from both classic large. monocytogene and others Lasteria kind. Alm executives showed a higher resistance to antibiotics, which raised concerns that they were possible unknown resistance and pathogenic tanks.
The Constitution also notes that the formation of biofilm on surfaces such as stainless steel, glass and plastics plays a critical role in its persistence L. monocytogenes in food processing environments, complicating cleaning and disinfection efforts.
Detection technologies
Since the standard ISO detection methods may be ineffective in identifying ALM strains, researchers strongly suggest the use of advanced tools, such as Maldi-TOF and genomic sequence. These techniques would allow the detection of horizontal gene transfer to more infectious large. monocytogene populations.
The whole genome sequence (WGS) was recently used for isolation large. monocytogene Executives ready for food for food. This study showed the potential of WGS technique to accurately identify plasmid elements, the decisive resistance factors, such as BRCBC and qacj Genes and mobile genetic elements associated with environmental perseverance. Therefore, WGS can improve the surveillance and assessment of the risk of food safety.
Long reading sequence using Oxford Nanopore minion was recently applied to detect E. Coli that produces Shiga (Stec) toxin directly from beef samples. This method allows to identify infectious genes within a few hours in clean crops and enriched food samples. The use of the long reading sequence method can not only reduce manual labor, but also significantly reduce the time of diagnostic time in the usual food safety tests.
Foodomics is a multi -scientific sector that combines genomic, proteinmatic, lipidomic, metabolic and bioinformatics for evaluating food quality and microbiological safety throughout the supply chain. The editorial emphasizes that Genomics also supports food reproduction and authentication programs, proteinma and metabolic helps to optimize nutrition and safety profiles in animal -based products and lipidomy helps to develop food growth. Advanced computational methods, such as mechanical learning, are increasingly needed to integrate these Omics data sets.
Gas-spectrographic spectrometry (GC-MS) is widely used to detect alobol alteration of foods and to identify toxic compounds formed in various food products, including fish, honey, dairy products. However, the high cost of application and the need for specialized infrastructure inhibit the widespread adoption of these advanced methods for early detection of pathogenic foods.
Exploring the antimicrobial properties of natural associations
Researchers have identified antimicrobial activities in natural compounds, such as essential oils. For example, GC-MS is used to determine monoterous and sesquirpene with antimicrobial action against Gram-positive and gram-negative bacteria, yeast and molds.
Saccharomyces Cerevisiae and Fusarium solani Showed high sensitivity to essential oils. Similarly, Staphylococcus aureus; MI. Coli, Airborne molds and yeast were effectively eliminated by the Frankincense Smoke, a natural sewer agent. However, inhaling fine particles can have a negative impact on health. Called whey protein with cannamaldehyde has shown significant antimicrobial efficiency against Listeria Innocua; MI. pumpkin; S. Cerevisiae populations.
On the contrary, vanillin showed a limited improvement with encapsulation. The study further used the Gompertz and Weibull mathematical models to analyze microbial inactivation, emphasizing the importance of predictive modeling in food conservation research.
The next step
The research in the Special Issue highlighted the current challenges and emerging solutions for the control of animal pathogens in the field of food. He also investigated the potential of advanced techniques to identify microbial pathogens associated with food diseases and new antimicrobial agents from natural sources.
The syntax emphasizes the need to standardize protocols, improve composite environments and integrate Omics with antimicrobial strategies. Interdisciplinary collaboration between food technologists, microbiologists, bioinformatics and public health professionals is essential for the development of effective interventions for the treatment of food diseases.
