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Larvicidal activity against Aedes aegypti of essential oils from northeast Brazil
Patrícia L Lavor1, Gilvandete M P Santiago, Roberto W da Silva Gois
1Departamento de Farmácia, Universidade Federal do Ceará, Rua Capitilo Francisco Pedro 1210, CEP 60430-370, Fortaleza, CE, Brazil.
Abstract:
The larvicidal activities of essential oils from the leaves of Artemisia vulgaris L., Cymbopogon flexuosus (Nees ex Steud.) Wats. and Piper tuberculatum Jacq. were evaluated using third-instar larvae of Aedes aegypti. The essential oils were obtained by hydrodistillation and analyzed by GC and GC-MS. The essential oil of P. tuberculqatum had the lowest LC50 value (106.3 +/- 2.2 microg/mL), followed by that of A. vulgaris (114.1 +/- 1.7 microg/mL) and C. flexuosus (121.6 +/- 0.8 micro/mL). The results show that these essential oils may be potent sources of natural larvicides.
