Interactions between salmonella typhimurium and other meat microorganisms

ABSTRACT

The competitive effect of certain organisms, that generally contaminate meat, on the growth of S. typhimurium was investigated. The test organisms were E. coli, Lactobacillus plantarum and certian species related to the genera Bacillus, Micrococcus and Pseudomonas. E. coli was found to exhibit antibacterial activity against S. typhimurium. Micrococcal organisms and L. plantarum slightly limited its growth rate. This was observed in meat as well as in the broth medium. Great stimulation of S. typhimurium growth was detected when grown together with the Pseudomonas sp. Lesser stimulatory effects were obtained for the Bacillus sp, The proteolytic activity of the organisms seemed to be responsible for their stimulatory effects