Chemical Composition and Larvicidal Activity of Lavandula angustifolia Subsp. angustifolia and Lavandula dentata Spp. dentata Essential Oils against Culex pipiens Larvae, Vector of West Nile Virus

Table 1

Chemical composition of L. angustifolia subsp. and L. dentata spp. essential oils.

Peak N^a	Compound	RI^b	L. angustifolia subsp. (%)	L. dentata spp. (%)
1	α-Thujène	931	0.09	0.11
2	α-Pinene	933	0.21	4.12
3	Camphene	953	0.2	1.12
4	β-Pinene	980	0.14	0.32
5	β-Myrcene	991	2.75	—
6	p-Cymene	1026	0.25	0.11
7	Limonene	1031	0.62	0.41
8	1,8-Cineole	1033	2.25	49.82
9	Linalool oxide E	1075	0.9	1.32
10	Fenchone	1078	0.21	0.74
11	Linalool	1098	32.23	2.24
12	α-Campholenal	1125	0.14	0.25
13	trans-Pinocarveol	1139	1.25	2.84
14	cis-Verbenol	1142	0.12	0.32
15	Camphor	1143	4.21	6.31
16	Lavandulol	1148	1.6	—
17	Terpinen-4-ol	1155	3.4	Tr
18	Borneol	1165	2.01	2.01
19	p-Mentha-1,3-dien-8-ol	1172	—	0.20
20	cis-Pinocarvone	1183	0.25	1.10
21	p-Cymen-8-ol	1184	0.09	1.21
22	Cryptone	1188	0.12	0.71
23	α-Terpineol	1189	0.92	0.43
24	Myrtenal	1193	2.62	1.61
25	Myrtenol	1194	1.44	1.62
26	Verbenone	1204	0.85	0.25
27	trans-Carveol	1217	0.09	0.27
28	Cuminaldehyde	1239	—	0.25
29	Geraniol	1241	5.8	0.22
30	Linalyl acetate	1241	14.23	0.12
31	Carvone	1242	0.06	0.44
32	Lavandulyl acetate	1271	4.8	0.25
33	Geranyl acetate	1359	1.7	—
34	β-Caryophyllene	1405	4.2	0.58
35	β-Selinene	1485	—	1.56
36	Caryophyllene oxide	1581	2.12	1.57
37	t-Cadinol	1616	1.6	—
38	β-Eudesmol	1649	0.54	1.12
39	α-Bisabolol	1683	0.37	0.27
40	β-Bisabolol oxide A	1744	0.33	0.22

^aNumber of a peak in the order of elution. ^bComponents identified based on mass spectra and retention indices. Tr: trace (<0.01%).