Table 2.
GBS strains | MICa | FICId | Effect | ||
---|---|---|---|---|---|
Eugenolb (%) | AgNPbioc (µM) | Eugenol/AgNPbio | |||
50 | 0.5 | 125 | 0.06/15.62 | 0.25 | Synergism |
72 | 0.125 | 125 | 0.03/31.25 | 0.5 | Synergism |
80 | 0.25 | 125 | 0.06/0.49 | 0.25 | Synergism |
89 | 0.25 | 125 | 0.03/7.8 | 0.19 | Synergism |
115 | 0.25 | 125 | 0.03/31.25 | 0.38 | Synergism |
121 | 0.125 | 125 | 0.03/3.9 | 0.281 | Synergism |
ATCC 13813 | 0.25 | 125 | 0.03/15.62 | 0.25 | Synergism |
aMIC: minimum inhibitory concentration. bMIC of eugenol used alone. cMIC of silver nanoparticle used alone. dFICI: fractional inhibitory concentrations index were calculated according to Yadav et al. [35] and classified as follows: synergistic if FIC ≤0.5, additive if FIC >0.5 and ≤1.0, indifferent if FIC >1.0 and ≤2.0, and antagonistic if FIC >2.0.