Chemical composition and larvicidal activity of essential oils from Piper species |
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| Authors: | Selene Maia de Morais,Valdir Alves Facundo,Luciana Medeiros Bertini,Eveline Solon Barreira Cavalcanti,Joã o Francisco dos Anjos Jú nior,Silane Aparecida Ferreira,Edy Sousa de Brito,Manoel Alves de Souza Neto |
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| Affiliation: | 1. Department of Chemistry, Ceará State University, Av. Paranjana 1700, Campus do Itaperi, CEP 60740-000, Fortaleza, Ceará, Brazil;2. Department of Chemistry, Federal University of Rondônia, Br 364, Km 9.5, CEP 78900-500, Porto Velho, Rondônia, Brazil;3. Department of Organic and Inorganic Chemistry, Federal University of Ceará, Pici Campus, CEP 60021-970, Fortaleza, Ceará, Brazil;4. Embrapa Agroindústria Tropical, Rua Dra. Sara Mesquita, 2270, Planalto do Pici, CEP 60511-110, Fortaleza, Ceará, Brazil |
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| Abstract: | The larvicidal activity of essential oils of four species of Piper from the Amazon Forest was tested using third-instar larvae of Aedes aegypti. The oils were extracted by steam distillation and analyzed by GC and GC–MS. The main components isolated from each Piper species were as follows: viridiflorol (27.50%), aromadendrene (15.55%) and β-selinene (10.50%) from Piper gaudichaudianum; β-selinene (15.77%) and caryophyllene oxide (16.63%) from Piper humaytanum; dillapiol (54.70%) and myristicin (25.61%) from Piper permucronatum; and asaricin (27.37%) and myristicin (20.26%) from Piper hostmanianum. Amongst all essential oils tested, the most active against larvae of A. aegypti was the oil extracted from P. permucronatum, with a LC50 = 36 μg/ml (LC90 = 47 μg/ml), followed by the essential oil of P. hostmanianum, with a LC50 = 54 μg/ml (LC90 = 72 μg/ml). The oils with higher content of arylpropanoids were more active against larvae of A. aegypti. |
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| Keywords: | Larvicidal activity Essential oil Piperaceae Aedes aegypti Dillapiol |
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