Antibiotic Susceptibility of Lactic Acid Bacteria

The antibiotics employed in this study were erythromycin (15 μg), streptomycin (10 μg), cefotaxime (30 μg), kanamycin (30 μg), cefradine (30 μg), gentamicin (10 μg), ciprofloxacin (5 μg), amoxicillin (10 μg), chloramphenicol (30 μg), clindamycin (2 μg), ampicillin (10 μg), cotrimoxazole (25 μg), tetracycline (30 μg), ceftazidime (30 μg), and ceftriaxone (30 μg) (Oxoid, UK). The antibiotics susceptibility was tested for all the isolated LAB using Kirby-Bauer disk diffusion test (40 (link)). Plates were incubated at 37°C for 24 h and then the diameters of the inhibition zones were measured. The resistance of the LAB strains was interpreted using the guiding principles of the Clinical and Laboratory Standards Institute (CLSI 2014).