A5051598032- Listeria monocytogenes in Food Safety
- Food Safety and Hygiene
- Microbial Inactivation Methods
- Probiotics and Fermented Foods
- Essential Oils and Antimicrobial Activity
- Salmonella and Campylobacter epidemiology
- Identification and Quantification in Food
- Escherichia coli research studies
- Enterobacteriaceae and Cronobacter Research
- Milk Quality and Mastitis in Dairy Cows
- Viral gastroenteritis research and epidemiology
- Bacteriophages and microbial interactions
- Spectroscopy and Chemometric Analyses
- Meat and Animal Product Quality
- Pesticide Residue Analysis and Safety
- Microbial Metabolites in Food Biotechnology
- Coccidia and coccidiosis research
- Mycobacterium research and diagnosis
- Bacillus and Francisella bacterial research
- Gut microbiota and health
- Antimicrobial Resistance in Staphylococcus
- Agricultural safety and regulations
- Biosensors and Analytical Detection
- Food Supply Chain Traceability
- Microbial Metabolic Engineering and Bioproduction
Teagasc - The Irish Agriculture and Food Development Authority
2014-2023
Unilever (Netherlands)
1999
Agricultural Institute
1988
Mobile genetic elements are major contributing factors to the generation of diversity in prokaryotic organisms. For example, insertion sequence (IS) have been shown specifically contribute niche adaptation by promoting a variety rearrangements. The complete genome cheese culture Lactobacillus helveticus DPC 4571 was determined and revealed significant conservation compared three nondairy gut lactobacilli. Despite originating from significantly different environments, 65 75% genes were...
Although rates of listeriosis are low in comparison to other foodborne pathogenic illnesses, poses a significant risk human health as the invasive form can have mortality rate high 30%. Food processors, especially those who produce ready-to-eat products, need be vigilant against Listeria monocytogenes, causative pathogen listeriosis, and such, occurrence L. monocytogenes food processing environment needs carefully monitored. To examine prevalence patterns contamination facilities Ireland, 48...
ABSTRACT This study aimed to characterize physiological differences between persistent and presumed nonpersistent Listeria monocytogenes strains isolated at processing facilities investigate the molecular basis for this by transcriptomic sequencing. Full metabolic profiles of two strains, one nonpersistent, were initially screened using Biolog's Phenotype MicroArray (PM) technology. Based on these results, in which major from selected antimicrobial agents detected, another strain...
This study extends current understanding of the genetic diversity among L. monocytogenes from various food products and processing environments. Application WGS-based strategies facilitated tracking this pathogen importance to human health along production chain while providing insights into pathogenic potential for some isolates recovered. These analyses enabled grouping selected three putative virulence categories according their genotypes with informing selection phenotypic assessment...
ABSTRACT Survival of a nontoxigenic isolate Escherichia coli O157:H7 at low pH (pH 3.0) was examined over prolonged time periods for each three population types: exponential-phase cells, stationary-phase and acid-adapted cells. In population, approximately 5 × 10 4 CFU ml −1 were detected after 24-h incubation 3.0. Even 3 days 3.0, significant numbers survivors from the populations could be detected. The high level acid tolerance exhibited by these found to quickly lost once they transferred...
Listeria monocytogenes is a major human foodborne pathogen that prevalent in the natural environment and has high case fatality rate. Whole genome sequencing (WGS) analysis emerged as valuable methodology for classification of L. isolates identification virulence islands may influence infectivity. In this study, WGS was used to provide an insight into 25 from cases clinical infection Ireland between 2013 2015. Clinical strains were either lineage I (14 isolates) or II (11 isolates), with 12...
A multi-country outbreak of Listeria monocytogenes ST6 linked to blanched frozen vegetables (bfV) took place in the EU (2015–2018). Evidence food-borne outbreaks shows that L. is most relevant pathogen associated with bfV. The probability illness per serving uncooked bfV, for elderly (65–74 years old) population, up 3,600 times greater than cooked bfV and very likely lower any evaluated ready-to-eat food categories. main factors affecting contamination growth during processing are hygiene...
Abstract During routine sampling of bulk raw milk on a dairy farm, the pathogenic bacteria Listeria monocytogenes was found to be contaminant, at numbers < 100 cfu/ml. A strain with an indistinguishable pulsed-field gel electrophoresis pattern isolated from two months later. Environmental swabs taken environment were negative for presence L. , indicating possible case excretion directly into milk. Milk samples collected individual cows and analysed, resulting in identification (at 280...
This study was designed to investigate the ability of naturally occurring bacteria isolated from mushroom substrate prevent biofilm formation by Listeria monocytogenes or remove existing biofilms in production facilities.It is generally recognized that L. forms can facilitate its survival food-processing environments. Eleven bacteriocin-producing isolates were identified and bacteriocins characterized based on heat enzyme inactivation studies. Further characterization undertaken MALDI-TOF...