Loss of Viability by Listeria monocytogenes in Commercial Bovine Pepsin-Rennet Extract
نویسندگان
چکیده
منابع مشابه
Epidemiological burden of Listeria monocytogenes in Iran
Objective(s): Listeria monocytogenes is a foodborne pathogenic bacteria causing the infection listeriosis, which possibly affects all people, particularly immunocompromised persons and pregnant women. This microorganism can be found in several processed foods, dairy products, raw milk, meat and fish products, seafoods, eggs, fruits, and vegetables. This review discusses about the epidemiologica...
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The pathogenesis of Listeria monocytogenes depends on the ability of this bacterium to escape from the phagosome of the host cells via the action of the pore-forming toxin listeriolysin O (LLO). Expression of the LLO-encoding gene (hly) requires the transcriptional activator PrfA, and both hly and prfA genes are essential for L. monocytogenes virulence. Here, we used the hemolytic activity of L...
متن کاملThe effect of thermal treatment by cooking and storage on viability of Listeria monocytogenes in frankfurters
Listeria monocytogenes differs in several aspects from other pathogens transmissible through food. Considering the fact that it is widespread and significantly resistant to different unfavorable conditions of growth and development, such as low pH values and high NaCl concentrations, its microaerophilic and psychrotrophic traits, contamination of food with this pathogen has become one of the le...
متن کاملDETERMINATION OF DOMINANT SEROVARS OF LISTERIA MONOCYTOGENES
Serovars of Lisreria l1Iollocyrogelles were determined. Sera of aborted samples (200) were collected from different hospitals in Tehran and were tested serologically by immunofluorescent antibody methods (IF tests). 137 positive sera were identified. Positive sera were tested against 12 serovars of Listeria l1Iollocytogelles separately. Titers of antibody in patients' sera for all serovars ...
متن کاملA case of bovine raw milk contamination with Listeria monocytogenes
During routine sampling of bulk raw milk on a dairy farm, the pathogenic bacteria Listeria monocytogenes was found to be a contaminant, at numbers < 100 cfu/ml. A strain with an indistinguishable pulsed-field gel electrophoresis pattern was isolated from the bulk milk two months later. Environmental swabs taken at the dairy environment were negative for the presence of L. monocytogenes, indicat...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1989
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(89)79210-9