RESEARCH NOTE - IN-VITRO INHIBITION OF LISTERIA-MONOCYTOGENES GROWTH BY VEILLONELLAE CULTURES GROWN ON TARTRATE MEDIA

Veillonellae cultures were grown on agar media supplemented with tartr ate and examined for inhibitor effects on the growth of Listeria ia mo nocytogenes. Veillonellae cultures grown on media supplemented with 0 or 50 mmol l(-1) of tartrate did not inhibit the growth of L. monocyto genes; however, veillonellae grown on media supplemented with 100, 150 or 200 mmol l(-1) of tartrate did inhibit the growth of L. monocytoge nes. The inhibition of the growth of L. monocytogenes by the veillonel lae was correlated with the increased production of acetate and propio nate from tartrate bi veillonellae and with the reduction of the pH of the media by L. monocytogenes.