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Table 1 Minimum inhibition concentration (MIC) of commercial antibiotics and phenolic compounds against different strains of Salmonella enterica serovar Typhimurium; and antibacterial sensitivity profiles of those strains against some selected commercially available antibiotics

From: In vitro synergistic potentials of novel antibacterial combination therapies against Salmonella enterica serovar Typhimurium

Antimicrobials Strain ID
ATCC 14028 V08-S-HA-06-(170) V15-S-HA-02-(210) SAL 109 SAL 202 SAL 224
Amoxicillin (μg/mL) <  0.5 (S) 256 (R) 1 (S) 256 (R) 256 (R) 256 (R)
Ampicillin (μg/mL) 1 (S) 512 (R) 512 (R) 512 (R) 512 (R) 512 (R)
Cefotaxime (μg/mL) ≤ 2 (S) ≤ 2 (S) ≤ 2 (S) 512 (R) 128 (R) 128 (R)
Ceftiofur (μg/mL) <  1 (S) <  1 (S) 1 (S) 128 (R) 64 (R) 64 (R)
Erythromycin (μg/mL) 128 (R) 32 (R) 16 (R) 512 (R) 1024 (R) 512 (R)
Florfenicol (μg/mL) 8 (S) 8 (S) 4 (S) 64 (R) 32 (R) 64 (R)
Marbofloxacin (μg/mL) 0.062 (S) 0.25 (S) 0.25 (S) 2 (I) 2 (I) 4 (I)
Norfloxacin (μg/mL) 0.25 (S) 4 (R) 0.5 (S) 4 (R) 16 (R) 8 (R)
Penicillin G (μg/mL) 8 (S) 1024 (R) 32 (R) >  1024 (R) >  1024 (R) >  1024 (R)
Thiamphenicol (μg/mL) 128 (R) 64 (R) 128 (R) 256 (R) 512 (R) 512 (R)
Epicatechin (μg/mL) >  1024 >  1024 >  1024 >  1024 >  1024 >  1024
Epicatechin gallate (μg/mL) >  512 512 >  512 >  512 >  512 >  512
Epigallocatechin (μg/mL) 1024 512 512 512 512 512
Gallic acid (μg/mL) 256 256 256 256 256 256
Hamamelitannin (μg/mL) 512 512 1024 1024 1024 1024
  1. S, susceptible; I, intermediate resistance; R, resistant. Sensitivity statuses of these strains are interpreted based on the MIC values of these tested antibiotics and their break-point MIC values mentioned in different guidelines [20,21,22,23,24]