Isolation and Susceptibility to Antibiotics of Bacterial Strains From Burkina Faso Fermented Milk Samples

The aim of this study was carried out to determine the antibiotics resistance of aerobic flora strain isolated from fermented milk in Burkina Faso. Nineteen representative strains of aerobic flora were concerned by this study. Antibiotic susceptibility and resistance of nineteen (19) representative aerobic microorganisms strains to six (06) antibiotics was investigated using disc diffusion method. The antibioctic used for the tests included Gentamycin, Penicillin, Ampicillin, Tetracyclin, Trimethoprime sulfamethoxazole, Erythromycin. The inhibition zone diameters of all antibiotics were between 0 mm and 48 mm for all the strains isolated and tested. The strains were highly resistant to Penicillin (78.94%), to Trimethoprime su lfamethoxazole (73.68%), to Gentamycin (63.15%) but had low resistance to Tetracyclin (57.89%), to Erythromycin (52.63%) and to Ampicillin (42.10%). The higher inhibition zone diameter was obtained with Ampicillin (48 mm). The lower one was more obtained with Trimethoprime sulfamethoxazole (73.68 % of 0 mm inhibition zone diameter) and Penicillin (68.42 % of 0 mm inhibition zone diameter). The high percentage of resistance to the antibiotics studied could be attributed to their usage and abuse in the animals’ sanitation.