Chemical composition and insecticidal properties of the underutilized Jatropha curcas seed oil

摘要: The chemical composition and insecticidal activity of Jatropha curcas L. seed were evaluated using standard techniques. oil content the is high (66.4%). Triacylglycenol was dominant lipid species, while major triacyglycerol 1,2-Dioleoyl-3-linoleoyl-rac-glycerol. Linolenic acid fatty in oil. Physico-chemical properties indicated that value, fee acids, peroxide value iodine high. Ten seterols thirteen tritepene alcohol identified unsaponifiable fraction at various serial dilution ranging from 0% to 2% (v/w) 0.5% intervals for anti-ovipositional long-term protective ability treated cowpeas against beetle Callosobruchus maculatus. significantly (P l 0.05) reduced oviposition by C. maculatus no-choice test all concentrations tested. number eggs laid an average 54. 33 +/- 3.53 control only 4.00 1.53 oil-treated seeds. There no adult emergency However choice- tested seed, 6.67 1.33 cultures with 21.67 1.45 cultures. In dual-choice tests, concentration evaluated. J. Curcas also offers a 12-week protection seeds since there neither damage nor cowpea results this study suggest has antioviposition ovicidal effects on therefore making it vaiable candidate incorporation into pest program gain legumes.