Identification, antibacterial and antifungal effects, antibiotic resistance of some lactic acid bacteria

A total of 74 lactic acid bacteria (LAB) isolates were obtained from yoghurt, cheese, raw milk, boza and whey. 36 strains identified at species levels as Lactococcus lactis (15), Lc. garvieae (8) Lactobacillus plantarum (7), Enterococcus faecium (3), Leuconostoc citreum (2) Lb.casei (1) by MALDI-TOF MS analysis. The tested for antimicrobial properties using disc diffusion method against Listeria monocytogenes, Staphylococcus aureus, Escherichia coli O157:H7, Cronobacter sakazakii, Bacillus cereus Salmonella Typhimurium. 18 available samples showed activity. Formation zones appeared 7 mm to 19 all bacteria, except B. cereus. Additionally, antibiotic susceptibility these investigated related LAB found resistant despite 72.2% rifampicin, 53.3% tetracycline vancomycin, 27.7% erythromycin nitrofurantoin. In this study, we antifungal effects the strains. screened dual agar overlay mycotoxigenic Aspergillus candidus, Cladosporium cladosporioides, sphaerospermum, Mucor hiemalis, Ulocladium chartarum, niger Penicillium expansum. effects. As a result, has properties, therefore, it can be used under various experimental conditions in future studies.