DEVELOPMENT OF LISTERIA-MONOCYTOGENES IN MONOXENIC AND POLYXENIC BEEF MINCES

  • 1 January 1978
    • journal article
    • research article
    • Vol. 166  (1) , 87-94
Abstract
The multiplication possibilities of L. monocytogenes in beef minces with a defined microflora (gnotoxenic) were determined. Selective counts were made for each species and each bacterial association for a period of 17 days after inoculation of the axenic meat. The concentration of L. monocytogenes did not increase, but remained constant in monoxenic meats. Associated with Lactobacillus plantarum, the number of Listeria tended to decrease. Conversely, in association with Pseudomonas fluorescens, L. monocytogenes definitely multiplied, especially in polyxenic meats, the microflora of which is similar to that of conventional meats. Consequently, meat might constitute a source of L. monocytogenes infection.