Insecticidal and antimicrobial extracts from Leaves and Stem -Bark of Sudanese Albizia anthelmintica

Abstract

The Purpose: of this study is to determine the toxicity of Albizia anthelmintica leaves and stem bark extracted compounds to some insects. Methods: The phytochemical screening and physiochemical analysis for leaves and stem bark had been carried out by using Standard methods, to study the pharmacological activities of these materials.Results: the findings indicated Albizia anthelmintica leaves powder had significant (p> 0.05) against Tribolium castaneum. Organic extracts of Albizia anthelmintica leaves had toxic effect on Culex quinquefasciatus larve and were effective in reducing the fecundity of Tribolium castaneum adults. The phytochemical screening demonstrated the presence of some secondary metabolites such as alkaloids, flavonoids, tannins, triterpenes, coumarin, cardia glycosides and saponins. The results indicated high nutrients like crude fibre levels 16.15% and 9.5% are found in leaves and stems-barks respectively; beside protein level 8.95%, Crude fat level 2.6%, Moisture content 2.5%, ash content 6.75% and Nitrogen free extract content 63.05%. Minerals like sodium 350 ppm, phosphous 245 ppm, calcium 215 ppm, potassium 1.65 ppm and magnesium 1.25 ppm were showed in two parts. The ethyl acetate of extract of Albizia anthelmintica leaves intermediate activity against some types of bacteria and fungi. The ethanol extract of leaves presented high activity against fungi Candida Albicans.Conclusion: Albizia anthelmintica leaves powder and ethanolic extract had high efficiency on reducing number of pest and their ability of laying eggs.