Table 1.

Chemical composition of evaluated EOs.

Peack No.	Compound	RI *	O. vulgare	T. serpyllum	T. vulgaris
Monoterpene Hydrocarbons			4.04	25.78	11.26
1	α-Pinene	937	0.18	0.19	1.47
2	Camphene	952	0.14	0.16	1.83
3	β-Pinene	978	0.67	2.37	0.17
4	β-Myrcene	991	0.24	0.32	1.73
6	α-Phellandrene	1005	0.08	0.11	0.15
7	α-Terpinene	1017	0.45	0.15	0.63
9	Limonene	1030	0.79	0.17	1.82
11	γ-Terpinene	1060	1.49	22.31	3.46
Aromatic Monoterpene Hydrocarbons			4.52	16.66	23.83
8	p-Cymene	1025	4.52	16.66	23.83
Oxygenated Monoterpenes			2.49	1.57	6.49
10	1,8-Cineole	1032	0.37	0.17	0.84
12	Linalool	1099	1.08	-	2.14
13	Camphor	1145	0.07	0.57	0.27
14	endo-Borneol	1167	0.39	-	1.73
15	Terpinen-4-ol	1177	0.47	0.11	1.28
16	Isomenthol	1183	-	0.63	-
14	α-Terpineol	1189	0.11	0.01	0.19
20	Carvone	1242	-	-	-
23	Geranyl acetate	1382	-	-	-
24	Bornyl acetate	1285	-	0.08	0.04
Aromatic Oxygenated Monoterpenes			83.81	55.78	51.7
18	Isothymol methyl ether	1230	-	-	0.83
19	Methyl thymol ether	1235	-	-	1.25
21	Thymol	1291	4.87	55.11	46.37
22	Carvacrol	1299	78.94	0.67	3.25
Sesquiterpene Hydrocarbons			2.88	0.14	4.94
25	α-Cubebene	1351	0.01	-	0.09
26	β-Cubenene	1388	-	-	0.01
27	trans-β-Caryophyllene	1419	2.49	0.09	3.86
28	Aromandendrene	1440	-	-	-
29	cis-β-Famesene	1443	-	-	-
30	Humulene	1454	0.11	0.05	0.57
31	allo-Aromandendrene	1461	-	-	-
32	γ-Muurolene	1477	-	-	-
33	β-Selinene	1486	-	-	-
34	β-Bisabolene	1509	-	-	-
35	γ-Cadinene	1513	-	-	-
36	δ-Cadinene	1524	0.27	-	0.41
Oxygenated Sesquiterpenes			1.37	0	1.05
37	Caryophyllene oxide	1581	1.37	-	1.05
Aliphatic Compunds			0.02	0	0
5	3-Octanol	994	0.02	-	-
Total of Identified Compounds			99.13	99.93	99.27

* Retention indices relative to C9-C24 n-alkanes on the HP 5MS column.