Table 2 Toxicity of fractions obtained from solvent partitioning of methanol extract of Zanthoxylum piperitum bark to third-instar larvae from Aedes aegypti during a 24 h exposure
Material | n a | Slope ± SE | LC50, mg/l (95% CIb) | LC90, mg/l (95% CIb) | χ 2c | P-value |
|---|---|---|---|---|---|---|
Methanol extract | 240 | 4.3 ± 0.47 | 3.95 (3.47–4.40) | 7.88 (6.92–9.40) | 4.03 | 0.945 |
Hexane-soluble fraction | 240 | 4.0 ± 0.43 | 4.21 (3.75–4.73) | 8.78 (7.47–11.19) | 3.90 | 0.951 |
Chloroform-soluble fraction | 240 | 3.8 ± 0.47 | 5.68 (5.06–6.33) | 12.30 (10.37–15.94) | 4.14 | 0.941 |
Ethyl acetate-soluble fraction | 60 | > 100 | ||||
Water-soluble fraction | 60 | > 100 |