Effect of route of introduction and host cultivar on the colonization, internalization, and movement of the human pathogen Escherichia coli O157:H7 in spinach.

Human pathogens can contaminate leafy produce in the field by various routes. We hypothesized that interactions between Escherichia coli O157:H7 and spinach are influenced by the route of introduction and the leaf microenvironment. E.

Influence of sodium glycocholate on production of conjugated linoleic acid by cells of Lactobacillus reuteri ATCC 55739.

The possible influence of a bile salt on production of conjugated linoleic acid (CLA) by Lactobacillus reuteri ATCC 55739 was evaluated. Cells of the lactobacilli grown in MRS broth with and without linoleic acid (LA, 0.2%) were harvested and washed.

Incidence and toxin production ability of Escherichia coli O157:H7 isolated from cattle trucks.

Twelve cattle trucks were analyzed for the presence of Escherichia coli O157:H7. Three of them had been washed prior to arrival, and the others had not. Seventy-five percent of the trailers were positive for the presence of this foodborne pathogen.