@entity5125 is a foodborne pathogen of major concern to the food industry in general and the meat industry in particular. The aim of this study was firstly to identify a strain of Listeria that was virulent in SPF BALB/c @entity19 . Secondly, to investigate if a traditional meat starter culture (FloraCarn) and nontraditional meat starter (NTMS) cultures of dairy product and @entity1 origin ( @entity9206 and bifidobacteria) inhibit this pathogen in vivo. In addition, the inhibition of Listeria was investigated in vitro. In vitro inhibition was investigated using an agar inhibition assay, where soft agar containing the pathogen was laid over colonies of NTMS cultures, and inhibition expressed as the zones of inhibition developing around the colonies. For assessment of virulence, @entity19 were intragastrically challenged with broth cultures of five strains of Listeria. For assessment of anti-listeria effect in vivo, the Listeria strain proven to be most pathogenic (LM3) was given to @entity19 in salami batter containing no other added cultures (control) or batter inoculated with either (1) FloraCarn, (2) a NTMS culture, or (3) a combination of FloraCarn and a NTMS culture. The batter was given to @entity19 after a 3-day fermentation and faecal levels of pathogen and body weight were monitored. Intragastric challenge with LM3, but no other strains, resulted in a significant @entity353 (p<0.05) and up to 10(6) colony forming units (cfu) of LM3 per gram faeces. No @entity353 was observed in animals fed with salami batter containing LM3. Consumption of salami batter fermented by a combination of NTMS culture ( @entity9206 LAFTI(R) @entity53818 ) and FloraCarn reduced faecal levels of the pathogen by 2.5 log units compared to the control. Consumption of salami batter fermented with FloraCarn and LAFTI(R) @entity53818 ( @entity53818 ) alone reduced faecal levels by 0.5-1 and 1.5 log units, respectively. Of the NTMS cultures investigated here, @entity53818 displayed the greatest inhibition of LM3 in vitro. These results indicate that the ability of pathogenic Listeria to cause listeriosis is dependent on the nature of the food in which the pathogen is present, and that a traditional meat starter culture (FloraCarn) and some NTMS cultures, particularly @entity53818 , inhibit growth of the pathogen during passage through the gastrointestinal tract.

The effect of processed meat and meat starter cultures on gastrointestinal colonization and virulence of XXXX in @entity19 .

@entity1 :: ('9606', 'Species') :: ['human'] @entity353 :: ('MESH:D015431', 'Disease') :: ['weight loss'] @entity19 :: ('10090', 'Species') :: ['mice'] @entity5125 :: ('1639', 'Species') :: ['Listeria monocytogenes'] @entity9206 :: ('1579', 'Species') :: ['Lactobacillus acidophilus', 'Lactobacillus'] @entity53818 :: ('114722(Tax:10090)', 'Gene') :: ['L10']
@entity5125 :: (1639,Species) :: ['Listeria monocytogenes']
