Oviposition Deterrent Efficacy and Characteristics of a Botanical Natural Product, Ocimum gratissimum (L.) Oil-Alginate Beads, against Aedes aegypti (L.)
Table 1
Formulations, production yield, essential oil content, entrapping efficiency, and mean diameter of the prepared beads.
Formulation code
Essential oil %(w/w)
Sodium alginate %(w/w)
Tween®20 %(w/w)
Production yield (%)
Essential oil content (%)
Entrapping efficiency (%)
Mean diameter (mm)
P1
0.25
1
—
69.23 ± 4.89
13.90 ± 0.64
48.12 ± 3.25
1.28 ± 2.19
P2
0.5
1
—
66.93 ± 3.47
22.41 ± 0.23
45.00 ± 4.79
1.26 ± 2.47
P3
1
1
—
64.71 ± 3.14
30.13 ± 0.82
39.00 ± 5.13
1.23 ± 3.21
P4
2
1
—
63.29 ± 4.31
27.97 ± 0.92
26.55 ± 3.56
1.10 ± 4.08
F1
10
1
1
69.09 ± 3.56
61.52 ± 0.55
51.00 ± 2.78
1.44 ± 2.52
F2
20
1
1
72.14 ± 4.31
68.36 ± 0.24
54.25 ± 5.14
1.49 ± 1.36
F3
30
1
1
75.00 ± 2.98
83.13 ± 0.52
66.50 ± 3.89
1.54 ± 4.22
F4
40
1
1
63.41 ± 2.83
80.32 ± 0.49
53.48 ± 4.33
1.51 ± 3.61
F5
50
1
1
55.88 ± 4.87
78.23 ± 0.32
45.47 ± 4.32
1.18 ± 1.58
F6
60
1
1
49.68 ± 5.08
76.51 ± 0.39
39.28 ± 3.79
1.15 ± 3.94
Empty beads
—
1
1
78.01 ± 3.98
—
—
1.42 ± 2.78
F2
—
—
—
—
67.23 ± 1.03
—
1.45 ± 2.89
After stability test. Each observation is the mean values ± SD. The formulations were hardened by 2% (w/v) of calcium chloride solution.
