Evaluación De La Eficacia De Los Extractos Naturales De Citronella(Cymbopogoncitratus),Albahaca(Ocimumbasilicum) Y Lavanda(Lavandulaspp.) Como Repelente Natural Contra Mosquitos Adultos De La Especie Aedes Aegypti.

Abstract

The present degree work had as purpose to identify wich of the following three used plants: Citronella (Cymbopogon citratus), Basil (Ocimum basilicum) and Lavanda (Lavandula spp.) is the most efficient as repellent, and also determine the best concentration to obtain a longer time of repellency. To accomplish this purpose was conducted an investigation project in laboratory; the extraxts of the plants were obtained trough cold extraction and a rotatory evaporator. Bioassays were performed with ten volunteers to determine the concentration with the best repellency, and eight volunteers to determine wich of the concentrations of the three plants show the longer time of repellency. For the systematization of the results was used an analysis of variance (ANOVA), wich generates statistical results in a mathematical way, trough wich, with a confiability of the 95%, shows the concentration and the effective repellency time for each of the used extracts. The results showed that the most effective extract is the Lavanda´s extract at a concentration of 2.4% fot repellency and a 60% for time of action; the following extract is Citronella´s extract that generates good results at the same concentration but without the same efectivity; and in comparation with this two plants the basil´s extract don´t generates a good efectivity.