In this study, lactic acid bacteria were isolated from ewe milk, traditional yoghurt and sour buttermilk
samples collected from different areas of Azarbayjan-e-sharqi in Iran. All the isolates were screened for
their ability to produce bacteriocin like inhibitory substances (BLIS) by studying their inhibitory action
against pathogens like Listeria monocytogenes, Salmonella enteritidis and Staphylococcus aureus, after
eliminating the effect of organic acids and hydrogen peroxide