Autor(es): Morais, Selene M.; Cavalcanti, Eveline S. B.; Bertini, Luciana M.; Oliveira, Carla Loane L.; Rodrigues, Jarson Raimundo B.; Cardoso, Jose Henrique L.

Resumo: Aedes aegypti is the major vector of dengue fever, an endemic disease in Brazil. In an effort to find effective and affordable ways of controlling this mosquito, the larvicidal activities of essential oils from Croton species widely found in northeastern Brazil were analyzed. The essential oils were extracted by steam distillation, and their chemical composition was determined by gas liquid-chromatography coupled with mass spectroscopy. The main components were methyleugenol and alpha-copaene for C. nepetaefolius (LC sub(50) of 84 ppm); alpha-pinene and beta -pinene for C. argyrophyloides (LC sub(50) of 102 ppm); and alpha-pinene, beta -phelandrene, and trans-caryophyllene for C. sonderianus (LC sub(50) of 104 ppm). Croton zenhtneri exhibited higher larvicidal activity with LC sub(50) of 28 ppm, and the main active constituent was identified as anethole, a phenylpropanoid compound.

Palavras-Chave: Larvicidal activity; Mosquito control; Aedes aegypti; Essential oils; Croton

Imprenta: Journal of the American Mosquito Control Association, v. 22, n. 1, p. 161-164, 2006.

Descritores: Aedes aegypti - Transmission ; Aedes aegypti - Dengue ; Aedes aegypti - Public health

Data de publicação: 2006

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