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Detection Of Presumptive Pathogens In Ground Beef From Supermarket And Farmers' Market Sources, Paige L. Stanley, Taylor A. Winslow, Indiren Pillay
Detection Of Presumptive Pathogens In Ground Beef From Supermarket And Farmers' Market Sources, Paige L. Stanley, Taylor A. Winslow, Indiren Pillay
Georgia Journal of Science
This study investigates whether specific pathogens are more prevalent in retail meat sold by supermarkets compared to locally sourced markets. Ground beef samples were obtained from conventional ‘big box’ supermarkets and from local, farmers’ markets and examined for the presence of two pathogens, Escherichia coli O157,H7 and Salmonella. For the detection of E. coli O157,H7, homogenized meat samples were enriched overnight in modified EC medium with novobiocin. The enriched cultures were selected onto MacConkey agar with sorbitol, cefixime and tellurite. Presumptive positive colonies were subcultured onto tryptic soy agar with yeast extract and further tested for positive indole and motility, …