Chemical composition and larvicidal activity of Algerian Foeniculum vulgare seed essential oil
Autor(es): Zoubiri, Safia; Baaliouamer, Aoumeur; Seba, Nabila; Chamouni, Nesrine
Resumo: A laboratory study was conducted to determine the effect of three extraction parameters (soaking time, extraction time and the ratio of solid to liquid) on the yield and chemical composition of Foeniculum vulgare seeds essential oils. The bioactivity of the essential oil extracted for the optimum extraction parameters was assessed against Culex pipiens mosquito. F. vulgare essential oil composition included large amounts of phenylpropanoids. Through an extraction time of 6 h and a ratio solid to liquid of 300 g/L we can get over than 72% of trans-anethol without soaking the seeds. With bioassays, essential oils showed different activities on C. pipiens larvae and pupae. Results show that a concentration at 40 mg/L was sufficient to register 50% mortality for the second instars larvae and this, after 2 h exposition time. Moreover, concentration at 60 mg/L ensured after 4 h exposition time 90% mortality for the fourth instars larvae. However, pupae needed 24 h exposition time to show promising mortalities when using concentration at 200 mg/L. Even if laboratory bioassays are only the first step towards the use of essential oils in practical applications, these substances represent a potential alternative to chemical insecticides in some markets. (C) 2010 Production and hosting by Elsevier B.V. on behalf of King Saud University.
Palavras-Chave: Foeniculum vulgare; Essential oil; Trans - Anethol; Activity; Culex pipiens
Imprenta: Arabian Journal of Chemistry, v. 7, n. 4, p. 480-485, 2014
Identificador do objeto digital: 10.1016/j.arabjc.2010.11.006
Descritores: Aedes aegypti - Repellent
Data de publicação: 2014
