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Table 3 Biostatic activity of OV EO

From: Chemical profiling, biostatic and biocidal dynamics of Origanum vulgare L. essential oil

Test microorganism (ATCC no.)Method of assessment
Agar dilutionBroth dilutionAgar diffusion
MIC (mg/ml)aInhibition zone, mmb
Ampicillin
 Gram positive organisms
  B. subtilis (6633)2.362.3626.9 ± 0.922 ± 0.5
  E. faecalis (8043)9.442.3613.6 ± 0.318 ± 0.7
  M. lutea (9341)4.722.3620.6 ± 0.715 ± 0.9
  S. aureus (6538)2.361.1820.5 ± 0.612 ± 0.4
  S. epidermidis (12228)9.442.3626.9 ± 1.121 ± 0.8
 Gram negative organisms
  Br. bronchiseptica (4617)2.362.3638 ± 1.523 ± 0.7
  E. coli (8729)4.724.7212.9 ± 0.810 ± 0.8
  Ps. aeruginosa (9027)> 9.44> 18.889.3 ± 0.415 ± 0.4
 Fungi
  C. albicans (10231)2.362.3616.1 ± 0.915 ± 0.3
  S. cerevisiae (2601)2.362.3629.5 ± 0.823 ± 0.5
  A. niger (16404)2.3616 ± 0.8
  1. aMinimum Inhibitory concentration, average of three determinations
  2. bAverage of 10 readings