The Chemichal Composition Evaluation And Larvicide Activity Of Cymbopogon Nardus Essential Oil To Control Aeges Aegypti Population In The South-Western Amazon

The environment friendly effect in the assessment of essential oils to eradicate mosquitoes transmitted diseases has been a promising tool. The present research was to evaluate chemical composition, larvicide activity and stablish lethal concentration (CL50) of citronella essential oil (Cymbopogon Nardus) to control Aedes Aegypti population. Through chromatography-mass spectrometry (GC/MS) analysis 94,65 % of the sample was identified and the main components were: Citronellal (27.62%), Geraniol (16.63%), Elemol (14, 78%) and beta-Citronellol (13.87%). To calculate and evaluate the larvicidal activity of A. aegypti, the larvae were exposed to different citronella oil concentrations of (25 - 400 ppm), diluted in hydroethanolic solution and observed up to 72 hours. Concentrations of 125, 200 and 400 ppm exhibited 100% mortality, while 25 ppm and the control group did not show mortality. The average lethal concentration (LC50) was 76,43 ppm, with a confidence interval (95%) of 68,56-83,86 ppm.