Quantification of attachment strength of selected foodborne pathogens by the blot succession method.

摘要

Attachment strength of selected foodborne pathogens (Listeria monocytogenes, Listeria innocua, Listeria grayii, Salmonella Typhimurium, and Escherichia coli O157:H7) were quantified using the blot succession method. E. coli O157:H7 and S. Typhimurium had higher removal exponents than Listeria species. Regardless of initial cell number, L. monocytogenes had the lowest removal exponent (0.27), being the most difficult to remove from the glass surface. The other Listeria spp. had exponents of 0.38-0.52 while S. Typhimurium and E. coli O157:H7 had exponents of 0.9 or higher. This method can serve to quantify attachment or detachment strength on food contact surfaces or digestive tracts..