. 2014 Jan;39(1):36–43.

Table 4.

Optimal inhibitory concentrations of the selected essential oils and extracts against some Gram-negative bacteria

Bacteria	Plant	MIC₅₀ ( µl/ml)	X²	*Significance*
E. coli	O. syriacum. L.	9.48	1.33	0.932
	T. syriacus. Boiss.	7.85	2.42	0.788
	S. aromaticum	16.11	2.8	0.732
	C. zeylanicum	9.48	1.33	0.932
	L .nobilis L.	20.43	6.32	0.276
	J. foetidissima Wild	21.82	2.98	0.703
	A. sativum L	8.41	1.71	0.888
	M. fragrans Houtt.	7.91	3.01	0.699
Y. enterocolitica	O. syriacum. L.	1.59	1.36	0.929
	T. syriacus. Boiss.	5.76	0.69	0.983
	S. aromaticum	5.22	1.28	0.937
	C. zeylanicum	5.76	0.69	0.983
	L .nobilis L.	4.30	2.99	0.702
	J. foetidissima Wild	12.57	1.87	0.867
	A. sativum L	5.52	2.05	0.842
	M. fragrans Houtt.	7.00	0.63	0.986
Proteus spp.	O. syriacum. L.	1.12	1.93	0.859
	T. syriacus. Boiss.	4.68	3.72	0.591
	S. aromaticum	2.21	4.92	0.426
	C. zeylanicum	1.35	1.73	0.885
	L .nobilis L.	4.68	3.72	0.591
	J. foetidissima Wild	6.98	0.78	0.978
	A. sativum L.	4.68	3.72	0.591
	M. fragrans Houtt.	6.03	0.63	0.986
K. pneumoniae	O. syriacum. L.	5.20	1.38)	0.927
	T. syriacus. Boiss.	3.03	3.58	0.612
	S. aromaticum	1.33	1.79	0.877
	C. zeylanicum	2.97	4.91	0.427
	L .nobilis L.	3.51	1.20	0.954
	J. foetidissima Wild	9.81	5.22	0.390
	A. sativum L.	8.75	3.86	0.570
	M. fragrans Houtt.	12.4	6.53	0.258