Research Article

Probiotic Potential of Lactobacillus Strains with Antimicrobial Activity against Some Human Pathogenic Strains

Table 6

Minimum inhibitory concentrations (MIC) for antibiotic susceptibility of Lactobacillus strains.

Antibiotic [MIC ( g/mL)]
StrainAmpicillinGentamicinKanamycinStreptomycinErythromycinClindamycinTetracyclineChloramphenicol
   Breakpoint*41664641184

L. casei Shirota**<0.25<8<64<32<1<0.063<1<4
L. acidophilus HM1<0.063<0.125<0.125<0.5<0.063<0.063<0.063<0.063
L. fermentum HM2<0.063<4<8<8<0.5<0.063<1<1
L. fermentum HM3<0.063<4<8<4<0.5<0.063<1<1
L. buchneri FG1<0.5<2<8<8<0.25<0.063<2<1
L. buchneri FD1<0.5<4<8<8<0.25<0.063<2<1
L. buchneri FD2<0.5<2<8<2<0.125<0.063<2<1
L. casei BF1<0.125<8<8<4<0.125<0.063<0.5<0.25
L. casei BF2<0.5<4<8<4<0.125<0.25<1<0.5
L. casei BF3<0.5<8<8<4<0.125<0.125<1<0.5

Values are provided by EFSA [22] for facultative heterofermentative Lactobacillus strains; according to EFSA, susceptibility testing of heterofermentative Lactobacillus strains against vancomycin is not required.
Reference strain.