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Table 6 Inhibition halos (mm) obtained treating different microorganisms with essential oil of Rosa × damascena collected from five regions and commercial antibiotics used as references

From: Variability in chemical composition and antimicrobial activity of essential oil of Rosa × damascena Herrm. from mountainous regions of Iran

Microbial strains Diameter of inhibition halo (mm)
Rose oils Antibiotics
Maragh Qamsar Sedeh Javinan Kamoo Rifampin Gentamicin Nystatin
S. aureus ND 10.67 ± 0.58e ND 14.67 ± 0.58b 15.67 ± 0.58a 21 27 NA
S. epidermidis ND 9.00 ± 0.00 a ND ND ND 27 45 NA
B. subtilis ND ND ND ND 10.67 ± 0. 58 a 19 30 NA
Sh. dysenteriae ND ND ND ND ND 9 17 NA
P. aeruginosa ND ND ND ND ND ND 20 NA
E. coli ND ND ND ND ND 10 23 NA
K. pneumoniae ND ND ND 9.33 ± 0.58b 10.67 ± 0. 58a 8 17 NA
S. pyogenes ND 9.00 ± 0.00b ND 12.00 ± 0.00a 12.33 ± 0. 58a 21 32 NA
S. paratyphi-A ND ND ND ND ND 8 18 NA
C. albicans ND ND ND ND ND NA NA 33
A. brasiliensis 12.00 ± 0.00d 16.00 ± 0.00b 13.67 ± 0.58c 14.33 ± 0.58c 17.33 ± 0.58a NA NA 30
  1. The diameters of the inhibition halos includes the diameters of wells (6 mm). Results are expressed as means ± SD of triplicate values. ND: not determined. NA: no activity. Values with different letters are statistically different (Duncan, P ≤ 0.01)