Identification of Volatile Compounds and Insecticidal Activity of Essential Oils from Origanum compactum Benth. and Rosmarinus officinalis L. against Callosobruchus maculatus (Fab.)

Table 1

Volatile compounds of EOC identified by GC-MS.

Peak	RT	Compound	Chemical formula	Chemical class	RI		Area (%)
					Cal	Lit
1	4.94	o-Cymene	C10H14	MO.H	1024	1024	5.68
2	5.67	Terpinolene	C10H16	MO.H	1280	1282	0.93
3	6.44	β-Terpineol	C10H18O	MO.O	1143	1144	0.53
4	6.55	α-Terpineol	C10H20O	MO.O	1163	1164	4.58
5	7.00	Piperitenone	C10H14O	MO.O	1341	1343	1.34
6	7.31	Carvacrol	C10H14O	MO.O	1297	1299	70.88
7	7.40	Thymol	C10H14O	MO.O	1290	1290	5.16
8	8.37	Trans-Caryophyllene	C15H24	ST.H	1594	1598	0.60
9	9.47	Caryophyllene oxide	C15H24O	ST.O	1986	1986	7.97
10	9.79	Adamantanone	C10H14O	MO.O	1309	1311	0.86
11	9.90	Naphthalene	C11H10O	O	1445	1447	0.65
12	9.98	Camphene	C10H16	MO.H	1065	1028	0.81
Monoterpene hydrate (MO.H)							7.42
Monoterpene oxygenated (MO.O)							83.25
Sesquiterpenes hydrate (ST.H)							0.60
Sesquiterpenes oxygenated (ST.O)							7.97
Others (O)							0.65
Total identified (%)							99.89

RI, retention indices; Lit, literature; Cal, calculate; RT, retention time in minutes.