Table 2.

Retention index (RI) and relative content (%) of each chemical isolated from PMEOs.

No	Compounds i	RT ii	RI iii	Exp.RI	Ref. iV	Relative content (%)
1	β-Pinene	3.143	796	980	A	10.12
2	γ-Terpinene	3.603	819	1059	A	14.17
3	D-Limonene	3.886	833	1028	G	9.8
4	allo-Ocimene	6.208	925	1132	E	0.12
5	Terpinolen	5.089	893	1081	H	0.93
6	β-Elemen	17.621	1193	1389	J	0.18
7	Longifolene	17.984	1203	1414	A	0.45
8	Caryophyllene	18.451	1219	1423	C	0.31
9	β-Selinene	20.452	1285	1487	B	0.1
10	Selinene	20.72	1294	1495	B	0.12
11	Muurolene	20.928	1301	1501	A	0.86
12	γ-Cadinene	21.316	1316	1511	I	1.51
13	δ-Cadinene	21.63	1328	1522	B	4.09
14	α-Cadinene	21.919	1339	1538	F	0.21
15	L-Pinocarveol	6.661	936	1144	G	0.17
16	Linalool	5.313	902	1095	H	0.45
17	Fenchol	5.801	915	1097	A	0.1
18	camphenehydrate	7.028	946	1148	F	0.22
19	Borneol	7.749	964	1150	H	1.4
20	Terpinen-4-ol	8.228	976	1183	A	0.46
21	α-terpineol	8.971	995	1199	A	1.55
22	Fenchylacetate	10.469	1026	1217	J	0.41
23	(-)-Bornyl acetate	14.168	1099	1289	D	44.95
24	Geranylacetate	17.444	1188	1363	H	0.22
25	T-Muurolol	24.577	1444	1640	I	0.98
26	τ-Cadinol	24.661	1448	1639	I	0.14
27	α-Cadinol	24.9	1458	1653	F	0.78
Total identified/%						94.8
Total monoterpenes/%						35.14
Total oxygen monoterpenes/%						0.17
Total sesquiterpenes/%						7.83
Others/%						51.66

ⁱThe compounds eluted from methyl silicone capillary columns (30 m × 0.25 mm, 0.25-μm film thickness) are arranged sequentially.

ⁱⁱRetention time (RT).

ⁱⁱⁱRetention index (RIs) of normal alkanes (C₆-C₄₀) on the same methyl silicone capillary column.

^iVLiterature index. ^ANellie Francezon and Tatjana Stevanovic, 2017; ^BBouddah Poaty et al., 2015; ^CNellie Francezon, 2018; ^DSen-Sung Cheng et al., 2008; ^E Alessandra Bertol et al., 2011; ^FRobert P. Adams et al., 2005; ^GM. A. Ferhat et al., 2007; ^HGianna Allegron et al., 2006; ^IMohamed Hazzit et al., 2006; ^JT. Dob, D. Dahmane and C. Chelghoum, 2008.