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Showing 1 to 20 of 76 for “"E. coli O157:H7"”.
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Sensitive Detection of Foodborne E. coli O157:H7 by Dendrimer-aptamer Modified Microchannels - with RCA Signal Intensifications
… amplification (RCA) is developed to detect E. coli O157:H7. In the proposed detection system, poly(amidoamine (PAMAM) dendrimers are immobilized onto inner surfaces of polydimethyl siloxane (PDMS) microchannels to avoid non-specific binding and to provide more binding sites to subsequently …
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Imobilização do Bacteriófago UFV-AREG1 para aplicação como sanitizante, curativo adesivo e nanobiosensor para biocontrole de E. coli O157:H7
… áreas da indústria. A bactéria Escherichia coli O157:H7 é um importante patógeno que pode estar presente em alimentos, podendo causar graves infecções intestinais em pacientes. Uma alternativa tanto para detecção deste patógeno em alimentos quanto para o tratamento é o uso de bacteriófagos, …
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Detection and survival of Escherichia coli O157:H7 in cattle water troughs and the effects of cetylpyridinium chloride against Escherichia coli O157:H7 biofilms on the surface of stainless steel
Escherichia coli O157:H7 is an emerging food pathogen that was first identified as a cause of illness in 1982. According to CDC (The Center for Disease Control and Prevention) estimates, E. coli O157:H7 is responsible for about 73,000 illnesses, 2,000 hospitalizations and 60 deaths in the United …
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Inactivation of Escherichia coli O157:H7 on raw vegetable sprouts
… combination with calcinated calcium spray on E. coli O157:H7 population reduction on radish sprouts was investigated. The results showed that spraying radish seeds soaked in 200 ppm chlorine solution with 0.04% calcinated calcium solution had potential in inhibiting growth of E. coli O157:H7. The …
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Survival of Escherichia coli O157:H7 on cut and whole surfaces of spinach and leaf lettuce, packaged under modified atmospheric conditions
Numerous food-borne outbreaks of Escherichia coli O157:H7 have been linked to leafy greens in recent years. An overwhelming amount of lettuce and spinach on the market is sold in modified atmosphere packaging as ready to eat salad mixes. The objectives of this study were to determine the effects of …
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Survival of Enterohemorrhagic Escherichia Coli O157:H7 During the Manufacture and Curing of Cheddar Cheese
<p>The ability of enterohemorrhagic Escherichia coli O157:H7 to survive a standard Cheddar cheese manufacturing process was determined using active lactic mesophilic starter culture and subsequent curing. This strain of E. coli can survive under more adverse intrinsic and extrinsic conditions than …
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Molecular Characterization of Spinach (Spinacia Oleracea) Microbial Community Structure and its Interaction With Escherichia coli O157:H7 in Modified Atmosphere Conditions
… leaves and to explore interactions with E. coli O157:H7. We assessed the bacterial diversity present on the spinach leaf surfaces and how parameters such as spinach cultivar, field conditions, post-harvest operations and the presence of E. coli O157:H7 affected its diversity. Differences in …
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Intervention Strategies for Escherichia coli O157:H7 and Salmonella in Organic Soil and on Fresh Produce
… foodborne diseases caused by Escherichia coli O157:H7 and Salmonella have been increasingly associated with the consumption of fresh produce. Consumers' demand for safe, natural products has led to research on natural antimicrobials for effective control of foodborne pathogens on fresh …
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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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Autoinducer-2-based quorum sensing of foodborne pathogenic bacteria under food related conditions
… AI-2 activity of Salmonella and Escherichia coli O157:H7 was not associated with rate of bacterial growth. Production of AI-2 was increased in the presence of glucose (0.5%), and AI-2 activity of E. coli O157:H7 was not very high in beef purge containing high levels of natural flora. …
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Survival and recovery of Escherichia coli O157:H7 during starvation at sub-optimal temperatures
Escherichia coli O157:H7 is an important foodborne pathogen with a dual lifestyle of growth within a host and persistence in non-host environments. Environmental survival of E. coli O157:H7 is particularly important in New Zealand due to the increasing trend in notified clinical cases, with most …
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Utilization OF Apple Wash Treatments And Ultraviolet Light For The Elimination Of Escherichia coli O157:H7 In Apple Cider
Three studies regarding Escherichia coli O157:H7 in apple cider were conducted. The objectives were: to evaluate the effectiveness of wash and sanitizers for removing E. coli O157:H7 from apples; to survey cider producer practices; and to determine the efficacy of ultraviolet light for reducing E. …
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Use of plant-derived essential oil compounds, naturally-occurring apple aroma compounds, and apple juice flavoring mixtures to control the growth of Escherichia coli O157:H7
… concentrations necessary to inhibit E. coli O157:H7. Three commercial apple juice flavoring mixtures (natural apple cinnamon, natural apple spice and natural red apple) were additionally tested alone for antimicrobial activity against E. coli O157:H7. The standard agar dilution method …
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Acid adaptation of Escherichia coli O157:H7 in fermented goat milk
… on the survival and growth of Escherichia coli in broth and fermented goat milk. In the first phase of the study, acid resistance of E. coli O157:H7 strain UT 10 and E. coli ATCC 25922 was determined in brain heart infusion broth at pH 7.4, 4.5 and 2.5. Variations due to acid stress in the …
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A Bifunctional Nanocomposites Based Electrochemical Biosensor for In-field Detection of Pathogenic Bacteria in Food
… detection of pathogenic bacteria, Escherichia coli O157:H7 and Salmonella Typhimurium, in foods. The possible presence of pathogenic bacteria in foods has always been a great threat to the wellbeing of people and the revenue of food companies. Therefore, the demand for rapid and sensitive …
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Efficacy of high pressure processing in combination with chemical preservatives for the reduction of Escherichia coli O157:H7 and Salmonella in apple juice and orange juice
… on the log reduction of six strains of E. coli O157:H7 and five serovars of Salmonella enterica were investigated in tryptic soy broth, sterile distilled water and commercially sterile orange and apple juice. Samples were subjected to high hydrostatic pressure (HHP) at 300 and 550 MPa for 2 …
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Control of pathogenic bacteria in Queso Fresco by using generally recognized as safe ingredients
… of L. monocytogenes, Salmonella, and E. coli O157:H7. Currently there are no available treatments to reduce post-pasteurization contamination. The goal of this research was to identify effective queso fresco antimicrobial treatments using available Generally Recognized as Safe (GRAS) …
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Growth probability of Escherichia coli O157:H7 and Listeria monocytogenes in packaged fresh-cut romaine mix at fluctuating temperatures during simulated transport, retail storage and display
… of fluctuating temperatures on Escherichia coli O157:H7 and Listeria monocytogenes growth in commercially bagged salad greens was assessed during transport, retail storage, and display. Over a 16-month period, a series of time/temperature profiles for bagged salad greens were obtained from …
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Spatial and Temporal Immune Response in House Flies in Response to Ingestion of Bacillus Cereus and Eschericha Coli 0157-H7
… of bacteria that are pathogenic. Escherichia coli O157:H7 is a pathogenic enterohemorrhagic serotype of E. coli that can be vectored by the house fly. Bacillus cereus is a foodborne pathogen that has also been isolated from the house fly in previous studies. To examine vector potential for …
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Characterisation of Escherichia coli of the bovine intestinal tract
Enterohaemorrhagic E. coli (EHEC) are important gastrointestinal pathogens of humans. E. coli serotype O157:H7 is the EHEC most commonly associated with human illness. E. coli O157:H7 is carried asymptomatically by cattle which form an important reservoir for the bacterium. E. coli O157:H7 has been …
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