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Table 4 WD (mm) of essential oils of Tripleurospermum disciforme (C.A.Mey.) Sch.Bip., Tanacetum parthenium (L.) Sch.Bip. and Achillea biebersteinii Afan. against tested strains

From: Tripleurospermum disciforme (C.A.Mey.) Sch.Bip., Tanacetum parthenium (L.) Sch.Bip, and Achillea biebersteinii Afan.: efficiency, chemical profile, and biological properties of essential oil

Strains WD (mm)
Essential oils Antibiotics
Tripleurospermum disciforme (C.A.Mey.) Sch.Bip Tanacetum parthenium (L.) Sch.Bip Achillea biebersteinii Afan Rifampin Gentamicin Nystatin
A. brasiliensis 12.00 ± 0.50b 13.00 ± 0.50a 13.00 ± 0.50a NA NA 30
A. sniger ND ND ND NA NA 27
C. albicans 10.33 ± 0.58a ND ND NA NA 33
B. subtilis 9.17 ± 0.29b 13.00 ± 0.50a 13.00 ± 0.50a 19 30 NA
E. coli 8.50 ± 0.50a ND ND 11 20 NA
K. pneumoniae 8.50 ± 0.50a ND ND 8 17 NA
P. aeruginosa ND ND ND ND 20 NA
S. paratyphi-A ND ND ND 8 18 NA
Sh. dysenteriae 8.33 ± 0.58a ND ND 9 17 NA
S. aureus ND 10.50 ± 0.50a ND 21 27 NA
S. epidermidis ND ND ND 27 45 NA
S. pyogenes ND ND ND 21 32 NA
  1. Values with different letters are statistically different (Duncan, P ≤ 0.01); Mean (%) ± SD of three cultures were reported
  2. WD The diameters of the inhibition zones includes the diameters of wells (6 mm), ND not determined, NA no activity