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.