Phytochemical and Larvicidal Activity Against Culex sp. of Nerium oleander L. (Pink cultivar) Flowers and Leaves Extracts

Abstract

Phytochemical and larvicidal activity against Culex sp. of organic solvent extracts from the fresh flowers and leaves of Nerium oleander L. (Pink cultivar) were evaluated. Many substances such as phenolic compounds, alkaloids, flavonoids, terpenoids, saponins, cardiac glycosides except anthraquinones and iridoid glycosides were found in these plant extracts. The result of larvicidal activities show that the methanolic extract from leaves of N. oleander exhibited highest activity with a LC₅₀ value of 251.70±12.17 mg/l which this activity may related with phenolic compounds, alkaloids and saponins found in the extract.