Table 2.
Effects (mean percentage ± SE) of tested essential oils on inhibition of egg hatching of H. contortus
| Concentration (mg/ml) | C. aurantifolia | A. nobilis | L. officinalis |
|---|---|---|---|
| 50 | 100.0 ± 0.0a,b | 99.0 ± 0.38a,b | 100.0 ± 0.0a,b |
| 25 | 100.0 ± 0.0a,b | 99.4 ± 0.87a,b | 100.0 ± 0.0a,b |
| 12.5 | 98.9 ± 1.87a,b | 97.0 ± 2.38a,b | 99.8 ± 0.30a,b |
| 6.25 | 96.4 ± 2.61a,b | 95.7 ± 2.13a,b | 99.4 ± 0.94a,b |
| 3.125 | 95.9 ± 2.41a,b | 86.4 ± 4.71b | 92.3 ± 3.03b |
| 1.562 | 86.9 ± 2.33b | 74.5 ± 3.58b | 82.8 ± 3.62b |
| 0.781 | 56.2 ± 3.97b | 63.3 ± 4.12b | 85.0 ± 3.15b |
| 0.390 | 42.1 ± 4.70b | 26.6 ± 1.46b | 81.8 ± 1.36b |
| 0.195 | 14.9 ± 3.89b | 13.4 ± 2.33b | 9.5 ± 1.54b |
| 0.097 | 13.0 ± 1.44b | 14.1 ± 2.60b | 6.8 ± 1.69 |
| IC50 = 0.694 mg/ml | IC50 = 0.842 mg/ml | IC50 = 0.316 mg/ml | |
| R2 = 0.985 | R2 = 0.978 | R2 = 0.950 | |
| Thiabendazol (0.025 mg/ml) | 100.0 ± 0.0b | 100.0 ± 0.0b | 100.0 ± 0.0b |
| Tween 80 (3%) | 7.6 ± 0.85 | 7.4 ± 3.94 | 3.5 ± 0.82 |
Abbreviations: IC50, inhibitory concentration 50%; R2, nonlinear correlation coefficient
aNo statistically significant difference between positive control and treatments
bSignificant difference between positive control or treatments with negative control (ANOVA, followed by Tukey test; P < 0.05)