Lactic acid bacteria biofilms and their ability to mitigate <i>Escherichia coli</i> O157:H7 surface colonization

Lactic acid bacteria (LAB) exert antagonistic activities against diverse microorganisms, including pathogens. In this work, we aimed to investigate the ability of LAB strains isolated from food produce biofilms and inhibit growth surface colonization Enterohaemorrhagic Escherichia coli (EHEC) O157:H7 at 10°C. The 100 EHEC NCTC12900 was evaluated in agar diffusion assays. Thirty-seven showed strong inhibitory effect on EHEC. highest corresponded belonging Lactiplantibacillus plantarum, Pediococcus acidilactici pentosaceus species. Eighteen out 37 that effects also had form polystyrene surfaces 10°C 30°C. Pre-established four these were able reduce significantly by low temperature (10°C). Among strains, Lact. plantarum CRL 1075 not only inhibited but grow presence enteric pathogen. Therefore, strain proved be a good candidate for further technological studies oriented its application food-processing environments mitigate undesirable contaminations E. coli.