A1: Inhibition of Listeria innoccua (ATCC 33090) by Leuconostoc mesenteroides using a direct method. A2: Inhibition of Listeria innoccua (ATCC 33090) by Leuconostoc mesenteroides using a direct method with buffered medium . A3: Inhibition of Listeria innoccua (ATCC 33090) by Leuconostoc mesenteroides using a direct method with buffered medium treated by catalase. B1: Antibacterial activity of Leuconostoc mesenteroides vs Listeria innocua (ATCC 33090) using an indirect method. B2: Antibacterial activity of Leuconostoc mesenteroides Y44, Y46 vs Listeria innocua (ATCC 33090) using a buffered medium treated with Tween-80. B3: Antibacterial activity of Leuconostoc mesenteroides Y44, Y46 vs Listeria innocua (ATCC 33090) using a buffered medium treated with α-chymotrypsin.

Figure 1: The inhibition spectra of Leuconostoc mesenteroides strains against indicator pathogens microorganisms Listeria innocua; Y39, Y40, Y41, Y44, Y46 and Y47: Leuconostoc mesenteroides isolated from camel’s milk.