In Vitro Antimicrobial Activity of Essential Oil of Thymus schimperi, Matricaria chamomilla, Eucalyptus globulus, and Rosmarinus officinalis

Table 2

Antimicrobial activity of the E. globulus, M. chamomilla, T. schimperi, and R. officinalis essential oil and standard antibiotics against bacteria.

Bacteria	Mean of zone inhibition in mm (mean ± SD)
	Plant species				Gentamicin	DMSO
	T. schimperi	E. globulus	R. officinalis	M. chamomilla
S. aureus	23.5 ± 1.52	32 ± 1.34	25 ± 1.23	NI	18 ± 1.21	NI
S. pyogenes	21 ± 0.87	16 ± 0.9	17 ± 1.11	NI	20 ± 0.91	NI
S. epidermidis	33 ± 1.5	20 ± 1.00	32 ± 1.2	NI	21 ± 0.99	NI
S. typhi	27.3 ± 1.1	18 ± 0.9	20.3 ± 1.00	NI	18 ± 0.88	NI
E. coli	12 ± 0.4	10 ± 0.52	6 ± 0.21	NI	21 ± 1.10	NI
Shigella spp.	20 ± 1.2	18 ± 0.89	22 ± 1.3	NI	NI	NI
P. aeruginosa	16 ± 1.00	28 ± 1.1	17 ± 1.2	NI	19 ± 0.90	NI

NI: no inhibition.