Table 1. Chemical composition of the essential oils of M. alternifolia and R. officinalis.

Peak #	Rt	Component	Molecular formula	RIexpa	RIlitb	Content (%)		Identificatione
						MAc	ROd
1	7.43	α-Thujene	C10H16	918	918	0.77	-	MS, RI
2	7.63	α-Pinene	C10H16	925	925	2.55	13.94	MS, RI
3	8.07	Camphene	C10H16	941	940	-	3.78	MS, RI
4	8.93	β-pinene	C10H16	972	972	0.71	1.28	MS, RI
5	9.39	β-Myrcene	C10H16	989	989	0.63	1.12	MS, RI
6	9.79	α-Phellandrene	C10H16	1003	1003	0.31	-	MS, RI
7	10.17	α-Terpinene	C10H16	1015	1015	10.84	-	MS, RI
8	10.43	p-Cymene	C10H14	1023	1023	2.51	2.68	MS, RI
9	10.55	D-Limonene	C10H16	1027	1027	-	3.01	MS, RI
10	10.56	Sylvestrene	C10H16	1028	1028	1.77	-	MS, RI
11	10.64	1,8-Cineole	C10H18O	1030	1030	2.88	53.67	MS, RI
12	11.51	γ-Terpinene	C10H16	1058	1058	23.07	-	MS, RI
13	12.44	Terpinolene	C10H16	1088	1088	3.50	-	MS, RI
14	12.81	Linalool	C10H18O	1100	1100	-	0.86	MS, RI
15	14.24	Camphor	C10H16O	1146	1146	-	10.43	MS, RI
16	14.92	Borneol	C10H18O	1167	1167	-	2.58	MS, RI
17	15.26	Terpinen-4-ol	C10H18O	1179	1179	45.23	-	MS, RI
18	15.66	α-Terpineol	C10H18O	1192	1192	2.95	2.07	MS, RI
19	22.27	Caryophyllene	C15H24	1424	1504	-	2.74	MS, RI
20	22.80	Alloaromadendrene	C15H24	1445	1445	0.86	-	MS, RI
21	24.27	Ledene (Viridiflorene)	C15H24	1503	1502	0.51	-	MS, RI
22	24.96	δ-Cadinene	C15H24	1530	1530	0.91	-	MS, RI
Monoterpene hydrocarbons						46.66	25.81
Oxygenated monoterpenes						51.06	69.61
Sesquiterpene hydrocarbons						2.28	2.74
Total identified components						100	98.16

^aRI_exp, Retention index determined experimentally on Rtx-5MS column

^bRI_lit, published retention indices

^cMA, Melaleuca alternifolia essential oil

^dRO,Rosmarinus officinalis essential oil

^eIdentification, was based on comparison of the compounds’ mass spectral data (MS) and retention indices (RI) with those of NIST Mass Spectral Library (2011), Wiley Registry of Mass Spectral Data 8^thedition and literature.