Table 6. Protective activity of S. guianensis essential oil against C. quinquefasciatus and A. aegypti.
Insect | Concentration of essential oil (µg/cm2/skin) | % of repellency (±SE) | ||||
---|---|---|---|---|---|---|
Time post application of repellent (min) | ||||||
5 | 15 | 30 | 60 | 120 | ||
A. aegypti | 0.025 | 100 ± 0 | 100 ± 0 | 72 ± 2.2 | 46 ± 4.5 | 30 ± 5.0 |
0.250 | 100 ± 0 | 100 ± 0 | 100 ± 0 | 57 ± 5.0 | 52 ± 7.5 | |
0.450 | 100 ± 0 | 100 ± 0 | 100 ± 0 | 81 ± 5.0 | 72 ± 4.0 | |
0.550 | 100 ± 0 | 100 ± 0 | 100 ± 0 | 100 ± 0 | 100 ± 0 | |
DEET | 100 ± 0 | 100 ± 0 | 100 ± 0 | 82 ±1.80 | 60 ± 2.10 | |
C. quinquefasciatus | 0.025 | 100 ± 0 | 100 ± 0 | 100 ± 0 | 55 ± 2.5 | 30 ± 3.6 |
0.250 | 100 ± 0 | 100 ± 0 | 100 ± 0 | 48 ± 4.3 | 42 ± 3.5 | |
0.450 | 100 ± 0 | 100 ± 0 | 100 ± 0 | 100 ± 0 | 100 ± 0 | |
0.550 | 100 ± 0 | 100 ± 0 | 100 ± 0 | 100 ± 0 | 100 ± 0 | |
DEET* | 100 ± 0 | 100 ± 0 | 100 ± 0 | 90 ± 3.1 | 80 ± 2.0 |
Values are mean of five replications ± SE
*DEET = N,N-diethyl-m-toluamide at 14.55%