Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"food-borne pathogen"”.
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Hyperinvasiveness in the major food-borne pathogen Campylobacter jejuni
Campylobacter jejuni is a common cause of human gastrointestinal infections. Invasion of host epithelial cells is believed to be an important virulence Mechanism of this bacterium. C. jejuni strains vary in their ability to invade the human epithelial cells and some of the strains are …
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Studies on the rapid detection of the food-borne pathogen Listeria monocytogenes
… reducing the presumptive detection time of the pathogenic foodborne microbe Listeria monocytogenes. For rapid detection of the target organism, the physical assay conditions and the nutritional composition of the impedimetric medium were optimised for the metabolism of L. monocytogenes. …
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Temperature adaptation and plasmid transformation in Listeria monocytogenes ATCC 7644
As a recently recognized food-borne pathogen, L. monocytogenes has caused great concerns in food industry due to its ability to survive and grow in many refrigerated foods. The first part of this thesis research was to examine the ability of L. monocytogenes to adapt to changing environmental …
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Sample preparation methods and molecular based detection for the rapid isolation and identification of Listeria monocytogenes in food samples
… bacterium responsible for listeriosis, a food-borne disease, which may result in severe illness and possible death. The importance of L. monocytogenes as a food-borne pathogen has been recognized since the 1980's when a correlation between the cunsumption of contaminated foodstuffs and …
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Development of label-free detection systems targeting food-borne pathogens
Food-borne pathogens and food safety-related outbreaks have come to the forefront over recent years. Estimates on the annual cost of sicknesses, hospitalizations, and deaths run into the billions of dollars. There is a large body of research on the subject of detection of food-borne pathogens, …
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Coordinated regulation of the flagellar, Salmonella pathogenicity island 1, and the type I fimbriae gene networks in Salmonella typhimurium
… a phenotypic response from the cell. Using the food-borne pathogen, Salmonella, as a model organism, we try to investigate how cells encode strategies in networks to optimally control cellular behavior. Salmonella, on ingestion with contaminated food, swims in small intestine using …
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Identification and Optimization of the Antagonistic Potential of Native Spinach Microbiota towards Escherichia coli O157:H7
… spinach have been the object of several recent food-borne pathogen outbreaks. The purpose of this study was to isolate bacteria spinach epiphytic bacteria that inhibit growth of E. coli O157:H7, which we describe as antagonism. The mechanism of antagonism was investigated and we attempted to …
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Investigation of growth and stress tolerance characteristics of Cronobacter spp.
Cronobacter spp. are opportunistic pathogens which can be isolated from a wide variety of foods and environments. They are Gram negative, motile, non-spore forming, peritrichous rods of the Enterobacteriaceae family. This food-borne pathogen is associated with the ingestion of contaminated infant …
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Comparative Phenotypic and Transcriptional Differences of Campylobacter jejuni When Challenged with Low Molecular Weight Chitosan
Campylobacter jejuni is a prominent food-borne pathogen and causative agent of Campylobacteriosis infection. This infection arises primarily from the consumption of foodstuffs/beverages previously contaminated with this microorganism. Despite current food control measures currently employed, this …
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Investigating the potential of Sodium Butyrate to Control Salmonella Enteritidis in Poultry
… Enteritidis (SE) is a major poultry associated food borne pathogen that causes enteric illnesses in humans. Despite using various pre-harvest and post-harvest intervention strategies to reduce Salmonellosis, SE infection is still an extensive problem in the poultry industry with increased …
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The phenotypic and molecular responses of Listeria monocytogenes to stressors
Listeria monocytogenes is a food-borne pathogen and the causative agent of listeriosis, a severe infection resulting in septicaemia, meningitis and still birth. Infection typically arises through the consumption of contaminated foodstuffs. L. monocytogenes is a hardy organism which can survive …
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Feed Supplementation with Natural Extracts of Cranberry and its Efficacy on Campylobacter Colonization in Poultry
… as one of the leading causative agents of food borne diarrheal illness. Epidemiological evidence has shown that poultry is the main source for human infection. Poultry are asymptomatic carriers of Campylobacter within their gastrointestinal tract, with colonization levels reaching 106-108 …
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Deciphering Metabolic Adaptations in Salmonella Enterica Serovar Typhimurium 14028S During Batch Growth and Gentamicin Exposure Using Absolute Quantitative Proteomics
… absolute quantification of the proteome in the food-borne pathogen Salmonella enterica serovar Typhimurium (S. Typhimurium) using data-independent acquisition (DIA) mass spectrometry (MS)-based approach. We first mapped the metabolic activities of S. Typhimurium cells throughout batch growth …
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Interplay Between Tryptophan Metabolites and the Virulence Factors of Enteric Pathogens
… to colonize this niche. An invading intestinal pathogen, to effectively colonize the gut, must sense and respond to the molecular signatures in the gut, which leads to effective colonization and infection. Diet is the principal source of energy by the intake of three main nutrients: …
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Effect of Evaporative Cooling, Fat Content and Food Type on Pathogen Survival during Microwave Cooking
… microwave heating, the microbiological safety of foods prepared in the microwave has been in question for several years. Because foods are heated from the inside out and are strictly governed by their own internal properties such as ionic content, moisture level and specific heat, work must be …
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Bacteriophage Endolysins: Anti-Infectives and Lysidiagnostics for the Post-Antibiotic ERA
<p>Pathogenic bacteria represent a significant and increasing global health and safety concern. In addition, growing antibiotic resistance poses a serious threat to our ability to prevent and treat bacterial infection and disease. Addressing these threats will require the development and …