|
| Optimization of preparation of Jatropha curcas L. oil emulsion and effect of compound emulsifier on its insecticidal activity |
| |
| DOI： |
| KeyWord:Jatropha curcas L. oil emulsion compound emulsifier stable time insecticidal activity |
| FundProject: |
|
| Hits: 1057 |
| Download times: 796 |
| Abstract: |
| Jatropha curcas L. oil is insoluble in water. If Jatropha curcas L. oil is applied to prepare pesticides in agriculture, the Jatropha curcas L. oil need to be emulsified to prepare stable Jatropha curcas L. oil emulsion. The effects of compound emulsifiers, emulsification temperature, emulsification method and solubilization water amount on the stable time of Jatropha curcas L. oil emulsion were studied, and the effect of compound emulsifier on the insecticidal activity of Jatropha curcas L. oil emulsion was studied. The results showed that the optimal emulsification conditions of Jatropha curcas L. oil emulsion were obtained as follows: compound emulsifier Tween-20/Span-60 with mass ratio of 0.12/0.88, emulsification temperature 20-30℃，emusification method of adding the compound emulsifier into the oil phase,then adding the water into the oil phase and stirring uniformly, and solubilization water amount 27.5%.Under these conditions, the stable time of Jatropha curcas L. oil emulsion was 55 d. When the mass concentration of Jatropha curcas L. oil emulsion was 0.10 mg/mL, the 72 h mortality rate of the test insects was 99.06%. The insecticidal activity of Jatropha curcas L. oil emulsion increased with the prolonging of stable time. |
| View full text View/Add Comment Download reader |
| Close |
|
|
|
