Chemical Constituents of Efficacy of Cymbopogon Olivieri (Boiss) Bar Essential Oil Against Malaria Vector , Anopheles Stepensi

Hydrodistillation of aerial parts of Cymbopogon olivieri (Boiss.) Bar (Andropogonae) yielded 1.7% v/w of the essential oil. By GC and GC/MS twenty-two components, representing 94.80% of the total oil composition were identified. The major constituents were Δ-3 carene (22.46%), piperitone (44.90%) and α-eudesmol (13.33%). The essential oil of Cymbopogon olivieri (Boiss.) Bar showed interesting activity against larvaes of Anophel stephensi (LD50=321 .902 p.p.m.).