الملخص

The present study revealed significant effect of the aqueous extract of the leaves of Ricinus communis at the concentrations 10,20,30, 40mg/ml of Datura innoxia, and Solanum melongena at the concentrations 50,100,150 and 200 mg/ml,respectvely on the viability of protoscoleces of Echinococcus granulosus of sheep origin. The concentration 40 mg/ml of R.communis leaves caused the death of all protoscoleces within 30 minutes ,while the concentrations 100 and 200 mg/ml of  D. innoxia and  S.melongena  caused the death of all protoscoleces within 60 minutes. The inhibitory effects of these extracts were proportional with their concentrations and the time of exposure.