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 20 of 59 for “"Salmonella spp."”.
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Nachweis von Salmonella spp. bei Landschildkröten
… study an efficient procedure for detecting salmonellas in feces of tortoises should be established. First of all a survey of occurrence of salmonellas in reptiles and their importance for reptiles as well as for man is given. Next an appropriate incubation temperature for multiplying …
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Anpassung von Salmonella spp. an neue Wirte durch horizontalen Transfer translozierter Effektorproteine
… optimal an ihre Wirte anzupassen, haben Salmonella spp. nach der Abspaltung vom kommensalen E. coli schrittweise neue Virulenzeigenschaften er- worben. Dies geschah vor allem über horizontalen Gentransfer (Ochman und Moran, 2001). Im ersten Schritt wurde die Salmonella-Pathogenitätsinsel …
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Presence of Antibiotic Resistant Salmonella spp. in Backyard Poultry and Their Environment
… enthusiasts have exposure risks to is <em>Salmonella </em>spp<em>.</em> which may cause a potential public health threat due to its increasing multidrug resistancy.<em> Salmonella </em>spp. were present in 33 of 50 samples collected from 29 sites with backyard poultry coops in San Luis …
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Predição de proteínas sensoras baseadas em bacteriófagos para detecção de Salmonella spp.
… e apresentando riscos à saúde pública. O gênero Salmonella está entre os principais causadores de surtos e doenças veiculadas por alimentos no mundo. Considerando a relevância epidemiológica e econômica desse patógeno, o uso de métodos de detecção rápidos e eficazes é crucial para a implementação …
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Campylobacter jejuni and Salmonella spp. Detection in Chicken Grow Out Houses by Environmental Sampling Methods
Campylobacter and Salmonella are foodborne pathogens commonly associated with raw poultry. Although there has been much research done on isolating these pathogens from poultry production environments using cloacal swabs, fecal samples, intestinal tract contents and dissection, research involving …
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Role of airborne soil particulate in transfer of Salmonella spp. to tomato blossoms and consequential fruit contamination
… have become a commonly implicated vehicle of Salmonella outbreaks. Exposure of tomatoes to pathogen could occur in the field. Blossom inoculation with Salmonella can result in contaminated fruit but natural routes of blossom contamination are not well known. Salmonellae have been known to …
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Estudo de virulência de Salmonella spp. isolados de linfonodos mesentéricos suinos: uma abordagem utilizando o sequenciamento de genoma completo
Salmonella spp. é um importante patógeno causador de doenças de origem alimentar, gerando impactos na economia e saúde pública. Esta dissertação está dividida em dois capítulos, o primeiro com uma revisão sobre o tema e o segundo a apresentação dos resultados da pesquisa. O objetivo desse estudo …
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Antibacterial Activity of Hydrogen Peroxide Against Escherichia Coli O157:H7 and Salmonella Spp. in Fruit Juices, Both Alone and in Combination With Organic Acids
… Orange juice was inoculated with a comparable Salmonella spp. cocktail. In the first study, 0.017% and 0.012% H₂O₂ was added in combination with 0.1% and 0.3% of the dominant organic acid (OA) to 4°C and 25°C juices, with samples taken each day for 21 days. H₂O₂ was a significant factor in all …
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Efficacy of Ultraviolet Treatments for the Inhibition of Pathogens on the Surface of Fresh Fruits and Vegetables
… of 253.7nm (UVC) into the inhibition of Salmonella spp. and Escherichia coli O157:H7 were conducted. The objectives of these studies were: to determine the rates for the destruction of Salmonella and Escherichia coli O157:H7 on the surface of agar and to investigate its effectiveness on …
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Prevalence of Salmonella species and Escherichia Coli O157:H7 in organically managed cattle and food safety status of selected meat products
… associated with E.coli O157:H7 outbreaks. Salmonella spp., and E.coli O157:H7 are frequently associated with ground beef. Fermented sausage products were found to be a low risk food as the manufacturing process includes several hurdles for microbial growth. In fact, most outbreaks related …
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Surface Area Mapping and Rinse Procedures of Raw Produce to Determine Effectiveness of Pathogen Removal
… of a rinse solution would enhance recovery of Salmonella spp. from various produce surfaces. Strawberries, apples, and cantaloupe were surface inoculated with a five-strain cocktail of nalidixic acid resistant Salmonella spp. Samples were subjected to one of six different treatments using …
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Rischio igienico sanitario associato al consumo dei molluschi eduli lamellibranchi (M.E.L)
… bacteriological parameters (Escherichia coli, Salmonella spp) and does not provide the identification of other microorganisms which are naturally present within the marine environment and potentially pathogenic such as those belonging to the genus Vibrio. In accordance with the data provided by …
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Environmental Factors and Management Practices that Influence Salmonella and Listeria Prevalence at the Sub-Field Level on an Eastern Shore of Virginia Farm
… application) that may impact the prevalence of Salmonella spp. and Listeria spp. at the sub-field level (0.2 ha grids) on an Eastern Shore of Virginia farm. Virginia Tech's Eastern Shore Agricultural Research and Extension Center (ESAREC) farm was used due to the liability of testing for …
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Fate of Foodborne Pathogens During Osmotic Dehydration and Subsequent Storage of Apples
The fate of E. coli O157:H7 and Salmonella spp. during osmotic dehydration of apples was determined at different processing temperatures, times and calcium chloride (CaCl2) concentrations. Apple slices were inoculated to achieve an 8 log CFU/ apple slice concentration of a five strain mixture of E. …
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Sensory and Physical Assessment of Microbiologically Safe Culinary Processes for Fish and Shellfish
… to an internal temperature of 63°C to target Salmonella spp. Selected fish and shellfish were cooked to 64°C ± 1 and 74°C ± 1 and evaluated for consumer acceptability, characteristics of doneness at temperature endpoints, and physical changes of texture (TPA, KSC, and WB), color, and cook …
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Investigation of ethnic food safety : microbiological and consumer behavioral approaches
… and Escherichia coli, Staphylococcus aureus, and Salmonella spp. were identified. The Analysis of Variance based on GLM procedure using an SAS program was used to analyze the different numbers of microorganisms among the food samples. The results among the food samples showed differences in …
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Evolution mikrobieller Pathogenität: Salmonella Pathogenitätsinsel 2 als Paradigma für horizontalen Gentransfer
… der Evolution von Virulenzfaktoren in Salmonella auseinander. Es wurde ein auf Sequenzvergleichen basierendes Verfahren eingesetzt, um neue lateral erworbene Elemente zu identifizieren, die möglicherweise Hinweise auf die Entwicklung von Virulenz und Wirtsspezifität innerhalb der …
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Intervention Strategies to Reduce Foodborne Pathogens in Poultry During Grow-out and Processing
Several foodborne pathogens like Salmonella spp., Campylobacter jejuni and Clostridium perfringens can occasionally be traced to poultry sources. The development of intervention strategies that are applicable to different stages of poultry production can help lessen the level of these pathogens in …
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