Essential oils of leaves of Piper species display larvicidal activity against the dengue vector, Aedes aegypti (Diptera: Culicidae)

Revista Brasileira de Plantas Medicinais

Ht. Santana¹  Ftt. Trindade¹  3,4 Stabeli Rg.¹  Aae. Silva¹  Jstl. MilitÃo¹  Va. Facundo¹ 

关键词: Controle Vetorial;    Óleo Essencial;    Piperaceae;    Aedes aegypti;    Vector control;    Essential oil;    Piperaceae;    Aedes aegypti;   

DOI  :  10.1590/1983-084X/13_052

来源: SciELO

【 摘 要 】

The mosquito Aedes aegypti is the vector of the dengue virus, an endemic arbovirus from tropical and subtropical regions of the world. The increasing resistance of mosquitoes to commercial insecticides impairs regular control programs; therefore, chemical prospecting originating from the Amazonian flora is promising for potential new insecticides. Several Piper species are, notably, rich in phenylpropanoids and terpenoids, substances with proven insecticidal activity. The composition and the larvicidal activity of three Piper species against A. aegypti were evaluated. Essential oils were extracted by hydrodistillation in a modified Clevenger apparatus and analyzed by GC/MS. The major components found in Piper arboreum were germacrene D (31.83%) and bicyclogermacrene (21.40%); in Piper marginatum: (E)-methyl isoeugenol (27.08%), (E)-anethole (23.98%) and (Z)-methyl isoeugenol (12.01%); and in Piper aduncum: (E)-isocroweacin (29.52%) and apiole (28.62%) and elemicin (7.82%). Essential oils from the Piperaceae species studied resulted in Lethal Concentrations (LC50) of 34-55 ppm, while LC90 was higher than 100 ppm, except for P. marginatum (85 ppm).

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