The purpose of the study was to compare the antibacterial activity of Lactobacillus casei subsp. casei R-68 and Lactobacillus casei commercial against Staphylococcus aureus FNCC-15 and Escherichia coli FNCC-19. The research was carried out experimentally by testing isolates and cell-free supernatant of Lactobacillus casei subsp. casei R-68 and Lactobacillus casei commercial and to test the sens…