Fate of Listeria monocytogenes and Shiga Toxin-Producing Escherichia coli on Bresaola Slices During Storage
نویسندگان
چکیده
The viability of multistrain cocktails genetically marked strains Listeria monocytogenes and Shiga toxin-producing Escherichia coli (STEC) were separately monitored on slices one brand a commercially produced bresaola (ca. pH 6.7 aw 0.899) during extended storage at refrigeration abusive temperatures. Two 8 g each; ca.10.2 cm wide, ca. 11 long) layered horizontally within nylon-polyethylene bag. outer surface each slice was inoculated (50μL total; 3.5 log colony-forming units [CFU]/package) with rifampicin-resistant (100μg/mL) cocktail either L. (5 strains) or STEC (8 strains). Bags vacuum-sealed then stored 4°C 10°C for 180 90 d, respectively. In 5 trials, 3 bags analyzed pathogen presence sampling interval via the US Department Agriculture–Agricultural Research Service package rinse method. general, levels decreased by 3.0 2.4 CFU/package, respectively, after d when 4°C. When 3.1 Thus, sliced evaluated herein did not provide favorable environment persistence outgrowth surface-inoculated cells STEC.
منابع مشابه
Shiga toxin-producing Escherichia coli
Shiga toxin-producing Escherichia coli (STEC) cause hemorrhagic colitis (HC) and hemolytic uremic syndrome (HUS) in humans. Outbreaks are linked to bovine food sources. STEC O157:H7 has been responsible for the most severe outbreaks worldwide. However, non-O157 serotypes have emerged as important enteric pathogens in several countries. The main virulence factor of STEC is the production of Shig...
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1. Rautio M, Lonnroth M, Saxen H, Nikku R, Väisanen ML, Finegold SM, et al. Characteristics of an unusual anaerobic pigmented gram-negative rod isolated from normal and infl amed appendices. Clin Infect Dis. 1997;25(Suppl 2):S107–10. 2. Rautio M, Saxen H, Siitonen A, Nikku R, Jousimies-Somer H. Bacteriology of histopathologically defi ned appendicitis in children. Pediatr Infect Dis J. 2000;19:...
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1. Rautio M, Lonnroth M, Saxen H, Nikku R, Väisanen ML, Finegold SM, et al. Characteristics of an unusual anaerobic pigmented gram-negative rod isolated from normal and infl amed appendices. Clin Infect Dis. 1997;25(Suppl 2):S107–10. 2. Rautio M, Saxen H, Siitonen A, Nikku R, Jousimies-Somer H. Bacteriology of histopathologically defi ned appendicitis in children. Pediatr Infect Dis J. 2000;19:...
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ژورنال
عنوان ژورنال: Meat and muscle biology
سال: 2022
ISSN: ['2575-985X']
DOI: https://doi.org/10.22175/mmb.13918