Table 1.

Volatile components of the seven essential oils and their relative abundance.

RIa	RIb	RIc	Compoundsd	Lemon verbena	Sweet marjoram	Clove basil	Patchouli	Rosemary	Tea tree	Rose geranium
				% of totale
916	923	905	Tricyclene					t
919	931	909	α-Thujene	t	1.7		0.7	t	t
925	939	918	α-Pinene	0.9	1.5		t	54.8	2.6
939	953	934	Camphene					4.7
963	976	955	Sabinene	2.1	4.8				t
968	978	—f	1-Octen-3-ol		t
969	980	962	β-Pinene	t			t	2.6	t
977	985	—	6-Methyl-5-hepten-2-one	t
985	991	976	β-Myrcene	t	2.4		1.1	t	t
1005	1005	990	α-Phellandrene				t	t	t
1016	1018	1005	α-Terpinene		8.1		1.9	t	5.8
1026	1026	1010	p-Cymene		9.2		15.2	t	6.0
1031	1031	—	Limonene	16.1	2.6		t	3.7	2.9
1033	1032	1024	1,8-Cineole	4.6			2.4	22.2	27.7
1041	1040	—	β-(Z)-Ocimene	t	3.5	15.4
1053	1050	1032	β-(E)-Ocimene	2.4
1061	1062	1043	γ-Terpinene	t	18.5		10.7	t	14.0
1075	—	1051	cis-Sabinene hydrate	t	1.9			t
1087	1087	1072	Terpinolene		3.2			t	2.2
1097	—	1086	trans-Sabinene hydrate		9.9
1102	1098	1088	Linalool	t				t		t
1110	—	—	cis-Rose oxide							t
1117	—	—	Chrysanthenone					t
1123	—	—	trans-Rose oxide							t
1139	1143	1136	Camphor					t
1149	—	—	Isomenthone							t
1158	1154	—	Menthone							2.4
1158	—	—	cis-Chrysanthenol	0.7
1164	1164	1152	Borneol	t				3.7
1167	—	1162	cis-Pinocamphone					t
1174	1177	1162	Terpinen-4-ol	t	12.0		t	t	33.0
1177	—	—	(E)-Isocitral	1.1
1182	1173	—	Menthol							t
1189	1189	1174	α-Terpineol	1.0	t			t	5.9
1205	1204	—	Verbenone	t				4.5
1218	—	1204	Nerol	0.4
1224	—	—	Citronellol	t						28.9
1227	—	—	Thymol methyl ether		15.5
1230	1240	—	Neral	23.1
1234	1242	1229	Carvone				4.9
1244	1255	—	Geraniol	0.7				t		2.4
1259	1270	—	Geranial	26.9
1267	1275	—	Citronellyl formate							11.7
1273	1285	1269	Bornyl acetate	t				3.9
1291	—	—	Geranyl formate							t
1292	1298	1287	Carvacrol		2.2		47.5
1334	—	1341	α-Cubebene							t
1336	1356	1342	Eugenol			73.6
1345	1354	—	Citronellyl acetate							t
1356	1376	1357	α-Copaene	t		t				0.9
1368	1383	1365	Geranyl acetate	0.9
1368	—	1365	β-Bourbonene	t						1.5
1378	1391	—	β-Elemene							t
1399	1409	—	α-Cedrene	t
1404	1418	1406	β-Caryophyllene	3.9	3.1	t	10.9	t		9.3
1406	—	—	β-Cedrene	t
1424	1439	1423	α-Guaiene							1.3
1429	—	—	6,9-Guaiadiene							20.1
1435	—	—	cis-Muurola-3,5-diene							1.1
1439	1454	1435	α-Humulene	t			2.7			1.8
1443	—	—	allo-Aromadendrene	t						t
1462	1477	1457	γ-Muurolene							t
1465	1480	1461	Germacrene D	t		8.3				4.5
1472	1487	1461	ar-Curcumene	6.2
1472	1484	1466	β-Selinene							t
1474	—	1476	Bicyclogermacrene	3.9	t					1.0
1486	—	1480	α-Muurolene							t
1490	—	—	Isodaucene							t
1499	—	1494	γ-Cadinene							0.9
1501	—	1492	β-Curcumene	1.3
1506	1523	1503	δ-Cadinene							2.1
1556	1568	1544	(E)-Nerolidol	0.6						1.0
1557	—	1557	Spathulenol	1.8						1.8
1561	1581	1565	Caryophyllene oxide	1.5			2.1			1.7
1566	—	—	Furopelargone A							1.7
1597	1642	1592	1,10-di-epi-Cubenol							t

t = Trace, <0.5%.

^aCalculated Kovats retention index on the HP-5MS column.

^bKovats retention index (RI) from Pino et al [8].

^cKovats RI from Pitarokili et al [9].

^dThe chemical compositions were identified by Database NIST 08.

^eIntegral of peak area in the GC chromatograms is used.

^fNot found in the literature.