Chemical Constituents and Insecticidal Activities of the Essential Oil of Cinnamomum camphora Leaves against Lasioderma serricorne

Table 1

Chemical composition of the essential oil of Cinnamomum camphora leaves.

Compounds	RI*	Content (%)
𝛼-Pinene	939	2.05
Camphene	952	1.00
2-Thujene	967	1.97
Sabinene	977	1.80
𝛼-Phellandrene	1005	0.40
p-Mentha-2,4(8)-diene	1011	0.44
m-Cymene	1025	0.44
Cineole	1032	11.26
𝛼-trans-Ocimene	1051	0.05
2,2-Dimethylheptane	1055	0.07
2,2,5-Trimethylhexane-3,4-dione	1057	0.03
4,7-Dimethyl-4,4a,5,6-tetrahydrocyclopenta[c]pyran-1,3-dione	1061	0.31
2,5,9-Trimethyldecane	1067	0.08
Linalool	1094	22.92
7,7-Dimethyl-2-methylene-norbornane	1130	0.05
D-Camphor	1146	40.54
endo-Borneol	1182	0.23
(R)-(−)-p-Menth-1-en-4-ol	1197	1.02
p-Menth-1-en-8-ol	1214	2.30
Elixene	1356	0.33
Dihydro-cis-𝛼-copaene-8-ol	1379	0.61
𝛼-Bourbonene	1382	0.03
(S,1Z,5E)-1,5-Dimethyl-8-isopropenyl-1,5-cyclodecadiene	1401	0.22
Caryophyllene	1420	2.16
𝛾-Elemene	1458	0.98
Germacrene D	1474	0.94
𝛼-Caryophyllene	1478	0.24
3,5-Dimethyl-4-octanone	1578	0.05
Cadina-1(10),4-diene	1596	0.07
3,7,11-Trimethyl-3-hydroxy-6,10-dodecadien-1-yl acetate	1634	4.50
Oxalic acid, di(1-methyl) ester	1672	0.43
1,3,3-Trimethyl-2-hydroxymethyl-3,3-dimethyl-4-(3-methylbut-2-enyl)-cyclohexene	1691	0.10
Total		97.62

∗RI: retention index as determined on a HP-5MS column using the homologous series of n-hydrocarbons.