Oviposition Deterrent Efficacy and Characteristics of a Botanical Natural Product, Ocimum gratissimum (L.) Oil-Alginate Beads, against Aedes aegypti (L.)

Table 2

Chemical constituents of O. gratissimum oil.

Peak	Chemical constituents	Retention Time	RI determined^a	RI literature^b		Area (%)
		(min)			A	B	C
1	Octen-3-ol<1->	8.01	980	979	0.19	0.18	0.18
2	Myrcene	8.4	992	990	0.27	0.28	0.31
3	Ocimene<(Z)-beta->	10.08	1038	1037	14.95	13.88	13.51
4	Ocimene<(E)-beta->	10.47	1049	1050	0.70	0.69	0.77
5	Linalool	12.52	1095	1096	0.63	0.62	0.59
6	Eugenol	23.41	1357	1359	67.38	68.41	68.57
7	Copaene<alpha->	24.16	1376	1376	0.83	0.80	0.79
8	Bourbonene<beta->	24.53	1384	1388	0.09	0.07	0.05
9	Cubebene<beta>	24.76	1386	1388	0.30	0.38	0.31
10	Caryophyllene(E-)	25.96	1417	1419	1.32	1.27	1.29
11	Bergamotene<alpha-trans->	26.6	1436	1434	3.16	3.11	3.09
12	Humulene<alpha>	27.33	1454	1454	0.10	0.16	0.19
13	Germacrene D	28.43	1482	1485	5.25	5.46	5.20
14	Farnesene<(Z,E)-alpha->	28.94	1494	—	4.22	3.91	4.20
15	Farnesene<(E,E)-alpha->	29.46	1509	1505	0.21	0.29	0.31
16	Cadinene<delta>	30.08	1525	1523	0.40	0.46	0.38

A: before entrapping; B: after entrapping; C: entrapped oil after stability test.
^aRetention indices (RI) calculated from retention times in relation to those of a series of C₈-C₂₀ n-alkanes on a 30m BP-5 capillary column.
^bValues taken from Adams [37].