Table 1.

Chemical composition of the ten essential oils (EOs) as determined by GC-FID and GC-MS analyses.

Compounds	AI tab a	AI b	Amount% ± SD
C. camphora
α-Pinene	932	932	1.0 ± 0.01
o-Cymene	1022	1023	16.8 ± 0.10
Limonene	1024	1025	59.3 ± 2.20
Eucalyptol	1026	1026	21.8 ± 2.10
Terpinen-4-olo	1174	1175	0.5 ± 0.01
α-Terpineol	1186	1186	0.36 ± 0.01
C. verum
Z-Cinnamaldehyde	1217	1217	1.8 ± 0.06
E-Cinnamaldehyde	1267	1265	84.8 ± 0.29
Eugenol	1356	1356	13.4 ± 0.34
C. aurantium
α-Pinene	932	932	0.6 ± 0.006
Sabinene	969	969	0.3 ± 0.001
β-Pinene	974	974	0.2 ± 0.002
β-Myrcene	988	988	1.6 ± 0.002
Limonene	1024	1025	94.9 ± 0.02
Linalool	1095	1095	1.0 ± 0.01
Linalyl acetate	1254	1255	1.5 ± 0.006
E. citriodora
α-Pinene	932	932	1.4 ± 0.01
β-Pinene	974	974	1.0 ± 0.03
Eucalyptol	1026	1026	1.0 ± 0.20
Isopulegol	1145	1148	7.0 ± 0.15
Citronellal	1148	1150	83.9 ± 1.50
Citronellol	1223	1223	4.7 ± 1.71
Citronellyl formate	1271	1270	1.0 ± 0.02
β-Caryophyllene	1417	1417	1.0 ± 0.02
E. globulus
α-Pinene	932	932	2.5 ± 0.02
β-Pinene	974	974	0.5 ± 0.02
β-Myrcene	988	988	0.6 ± 0.02
α-Terpinene	1014	1014	0.2 ± 0.02
p.Cymene	1020	1021	3.3 ± 0.02
Eucalyptol	1026	1026	91.7 ± 0.02
γ-Terpinene	1054	1055	0.7 ± 0.02
Terpinen-4-ol-acetate	1299	1298	0.2 ± 0.02
α-Terpinyl-acetate	1346	1345	0.3 ± 0.02
M. piperita
α-Pinene	932	932	0.4 ± 0.01
β-Pinene	974	974	0.6 ± 0.01
Limonene	1024	1026	4.5 ± 0.01
Linalool	1095	1095	0.4 ± 0.01
iso-Pulegol	1145	1143	1.2 ± 0.03
Menthone	1148	1148	20.5 ± 0.08
iso-Menthone	1158	1156	11.3 ± 0.07
Menthol	1167	1167	54.8 ± 0.20
iso-Menthol	1179	1178	0.5 ± 0.01
Menthol neo-iso	1184	1182	0.2 ± 0.02
α-Terpineol	1186	1186	0.3 ± 0.04
Pulegone	1233	1232	0.7 ± 0.01
Carvone	1239	1239	0.6 ± 0.01
Menthyl-acetate	1294	1292	4.0 ± 0.03
P. asperum
α-Pinene	932	932	1.0 ± 0.01
Eucaliptol	1026	1026	1.8 ± 0.05
Linalool	1095	1095	12.8 ± 0.27
cis-Rose oxide	1106	1108	1.3 ± 0.03
trans-Rose oxide	1122	1121	0.5 ± 0.02
Menthone	1148	1148	1.4 ± 0.02
iso-Menthone	1158	1156	5.5 ± 0.24
Citronellol	1223	1223	35.0 ± 0.37
Geraniol	1249	1249	22.1 ± 0.30
Cytronellyl formate	1271	1273	7.0 ± 0.16
Geranyl formate	1298	1296	3.8 ± 0.20
α-Copaene	1374	1373	0.5 ± 0.10
Geranyl acetate	1379	1379	0.5 ± 0.02
α-Bourbonene	1384	1386	1.0 ± 0.03
β-Caryophyllene	1417	1417	2.0 ± 0.01
trans-Bergamotene	1432	1433	1.2 ± 0.04
trans-Murola-3,5-diene	1451	1450	1.0 ± 0.04
Citronellyl tiglate	1656	1655	1.6 ± 0.05
R. graveolens
Eucalyptol	1026	1026	0.4 ± 0.01
2-Nonanone	1087	1088	0.5 ± 0.02
Camphor	1141	1141	0.4 ± 0.01
2-Decanone	1190	1190	0.5 ± 0.04
2-Undecanone	1293	1294	83.2 ± 0.25
Carvacrol	1298	1299	15.0 ± 0.31
S. molle
α-Pinene	932	932	14.8 ± 0.16
Sabinene	969	969	3.4 ± 0.05
β-Pinene	974	974	7.0 ± 0.10
β-Myrcene	988	988	1.0 ± 0.05
δ-3-Carene	1008	1008	5.5 ± 0.07
p.Cymene	1021	1021	6.7 ± 0.09
Limonene	1024	1024	7.6 ± 0.09
Eucalyptol	1026	1026	0.3 ± 0.04
Linalool	1095	1095	10.0 ± 0.17
Terpinene-4-ol	1174	1174	1.2 ± 0.03
α-Terpineol	1186	1186	1.0 ± 0.05
Linalyl acetate	1254	1255	7.3 ± 0.16
Carvacrol	1299	1299	3.7 ± 0.14
δ-Elemene	1335	1333	0.5 ± 0.01
Eugenol	1356	1356	12.0 ± 0.13
β-Caryophyllene	1417	1417	5.4 ± 0.07
γ-Curcumene	1481	1480	0.8 ± 0.003
Myristicin	1517	1518	1.7 ± 0.06
Eugenil acetate	1521	1522	1.3 ± 0.03
Cedryl acetate	1767	1766	8.8 ± 0.39
S. aromaticum
Eugenol	1356	1356	89.6 ± 0.40
β-Caryophyllene	1417	1417	8.0 ± 0.40
α-Humulene	1452	1453	2.4 ± 0.01

^a Arithmetic indexes (AI)from library files (see 4.3)]; ^b AI calculated by GC relative to a homologous series of n-hydrocarbons (C₆-C₃₂) eluted on a DB-5 column.