Resumo: O mosquito Aedes aegypti é o vetor do vírus da dengue, Chikungunya e Zika. O aumento da resistência dos mosquitos a inseticidas comerciais prejudica programas de controle regulares; portanto, a prospecção química de espécies de plantas com propriedade larvicida tem sido uma alternativa para o controle deste vetor. O óleo essencial de Eugenia candollena DC foi obtido através do método de hidrodestilação, utilizando um aparelho tipo Clevenger modificado, sendo seus constituintes identificados utilizando a cromatografia a gás acoplada à espectrometria de massas e quantificados pela cromatografia gasosa. O óleo obtido foi rico em sesquiterpenos, demonstrando o -elemeno (35,87 ± 0,13%) como componente majoritário. A mortalidade das larvas do A. aegypti foi de 100% em 24 h após o tratamento com o óleo na concentração de 0,50 µg.µL -1 e a CL 50 para este tempo foi estimado em 0,30 µg.µL
AbstractThe mosquito Aedes aegypti is the vector of the dengue, Chikungunya and Zika virus. The increasing resistance of mosquitoes to commercial insecticides impairs regular control programs; therefore, chemical prospecting of plant species with larvicidal properties has been an alternative for the control of this vector. The essential oil of Eugenia candollena DC was obtained through the hydrodistillation method, using a modified Clevenger-type apparatus, being its constituents identified using gas chromatography-mass spectrometry and its constituents were quantified by gas chromatography. The oil proved rich in sesquiterpenes, containing -elemene (35.87 ± 0.13%) as major component. Aedes aegypti larvae mortality rate of 100% was obtained after 24 h of treatment with the oil at concentrations of 0.50 µg.µL
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