Listeria monocytogenes is a food-borne bacterial pathogen that causes a wide spectrum of diseases, such as meningitis, septicemia, abortion, and gastroenteritis, in humans and animals. Among the 13 L. monocytogenes serovars described, invasive disease is mostly associated with serovar 4b strains. To investigate the genetic diversity of L. monocytogenes strains with different virulence potential...

Delicatessen meats are reported to be the leading vehicle of foodborne listeriosis in the United States. Listeria monocytogenes can reach high numbers in these products during storage, and the growth rate is largely dictated by product formulation and storage temperature. To assess the impact of product age on Listeria growth, five commercial brands each of cured and uncured turkey breast, ham...

Enhanced haemolysis agar (EHA) was compared to the two conventional Listeria isolation agars Oxford and PALCAM for its ability to detect Listeria spp. from production lines of fresh to cold-smoked fish. The ability of EHA for distinguishing L. monocytogenes colonies from other Listeria spp. was also evaluated.A total of 243 fish and environmental samples were analysed. Overall, 42 samples were ...

The iap gene of Listeria species encodes protein p60. The comparison of iap-related genes from different Listeria species indicated common and variable regions within these genes which appeared to be specific for each Listeria species. On the basis of the iap gene sequences, pairs of polymerase chain reaction (PCR) primers which allowed the unambiguous identification of all members of the genus...

Background: Food preservation includes procedures to assure higher level of food safety, hygiene and stability. To achieve this goal, the use of combination biopreservatives, such as Essential oils and Probiotics, has gained increased attention. Objective: The aim of this study was to evaluate the antimicrobial effects of Mentha longifolia L. esential oil and Lactobacillus casei aginst Listeri...

A method was developed for detection of Listeria monocytogenes by polymerase chain reaction amplification followed by agarose gel electrophoresis or dot blot analysis with a 32P-labeled internal probe. The technique identified 95 of 95 L. monocytogenes strains, 0 of 12 Listeria strains of other species, and 0 of 12 non-Listeria strains.

Listeria monocytogenes is a Gram-positive, psychrotropic, facultative anaerobic pathogen and it is the etiological agent of listeriosis, a severe foodborne disease of major public health concern. Listeria monocytogenes has high ability to adapt adverse condition. Therefore, the control of Listeria monocytogenes in foods and feeds is very difficult. N this purpose, organic acids and bacteriocins...

We report here the draft genome sequence of Listeria monocytogenes strain SLCC208 from Seeliger's historical Special Listeria Culture Collection, initially cultured from a human case in France in 1921. This is, to our knowledge, the oldest L. monocytogenes isolate available and may be useful for comparative genomic studies of L. monocytogenes.

2 Irena Zdovc, PhD, assistant professor, University of Ljubljana, Veterinary Faculty, Institute for Microbiology and Parasitology, Gerbičeva 60, SI-1000 Ljubljana, Slovenia; Center of Excellence NAMASTE, Jamova 39, SI-1000 Ljubljana, Slovenia Summary Listeria monocytogenes and other Listeria species are microorganisms which can signi#cantly a$ect the health of consumers transferring by meat and...