Table 2: Antibacterial activity of S. montana L. essential oil against human pathogenic bacteria using agar disc diffusion method and determination of MIC (mg/mL) and MBC (mg/mL) values.

MicroorganismsOrigin IZ (mm ± SD)Antibiotics (Cip)MIC MBC

Bacterial strains
 Gram-positive bacteria
  Staphylococcus aureus ATCC 25923 0.780.78
  Staphylococcus epidermidis CIP 106510 0.390.78
  Micrococcusluteus NCIMB 8166 0.780.78
  Bacillus cereus ATCC 11778 0.390.78
  Bacilluscereus ATCC 14579 1.563.12
  Listeria monocytogenes ATCC 19115 (Gen)0.390.78
 Gram-negative bacteria
  Escherichia coli ATCC 35218 0.780.78
  Pseudomonas aeruginosa ATCC 27853 1.563.12
  Enterococcusfaecalis ATCC 29212 0.780.78
  Vibrioalginolyticus ATCC 17749 0.780.78
  Vibrioalginolyticus ATCC 33787 1.563.12
  Salmonella typhimurium ATCC 1408 0.780.78
  Salmonella typhimurium LT2 DT104 0.780.78
Salmonella spp. strainsSamples (isolation date)
S. enteritidis (1127) Manipulator (06-09-2000) 0.390.39
S. enteritidis (1128) Manipulator (06-09-2000) 0.390.39
S. enteritidis (1129) Manipulator (05-09-2000) 0.390.39
S. enteritidis (1130) Patient (06-09-2000) 0.390.39
S. enteritidis (1131) Manipulator (05-09-2000) 0.390.39
S. enteritidis (1133) Patient (06-09-2000) 0.390.39
S. enteritidis (1136) Patient (05-09-2000) 0.390.39
S. enteritidis (1137) Patient (06-09-2000) 0.390.78
S. enteritidis (1138) Meatball (05-09-2000) 0.390.39
S. enteritidis (1141) Patient (06-09-2000) 0.390.39
S. enteritidis (1142) Sandwich (06-09-2000) 0.390.39
S. enteritidis (1143) Salad (06-09-2000) 0.390.39
S. spp. (3654) Fermented milk: Lben (14-07-2010) 0.780.78
S. spp. (3777) Turkey (21-07-2010) 0.390.78
S. spp. (3907) Sandwich (26-07-2010) 0.780.78
S. spp. (3915) Cooked meat (26-07-2010) 0.786.25
S. spp. (4091) Turkey soup (02-08-2010) 0.780.78
S. spp. (5213) Salad (15-10-2010) 0.780.78
S. spp. (5545) Salad (01-11-2010) 0.390.78
S. spp. (5687) Lettuce Salad (08-11-2010) 0.780.78
S. spp. (5240) Sausage (28-01-2011) 0.390.78
S. spp. (5481) Salad (22-02-2011) 0.780.78
S. spp. (3912) Tajine (22-02-2011) 0.780.78
S. spp. (1063) Cheese (29-03-2011) 0.780.78
S. spp. (5235) Cheese (21-04-2011) 0.780.78
S. spp. (2591) Sausage (19-06-2011) 0.390.39
S. spp. (2543) Sausage (28-06-2011) 0.390.78
S. spp. (2586) Sausage (29-06-2011) 0.390.78
S. spp. (2786) Salad (08-07-2011) 1.563.12
S. spp. (2925) Tomato (19-07-2011) 0.781.56
S. spp. (3907) Sausage (05-09-2011) 0.780.78

IZ: inhibition zone in diameter (mm ± SD) around the discs impregnated with 10  L of essential oil. SD: standard deviation; Cip: ciprofloxacin (5  g/disc); Gen: gentamycin (10  g/disc).