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Acaricidal activity and chemical composition of the essential oil from three Piper species |
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| Authors: | Alexandre de B F Ferraz João Marcio Balbino Claudia Alcaraz Zini Vera Lucia S Ribeiro Sérgio A L Bordignon Gilsane von Poser |
| Institution: | 1. Programa de Pós-Gradua??o em Genética e Toxicologia, Universidade Luterana do Brasil, Aplicada, Av. Farroupilha, 8001, Bairro S?o José, Canoas, Rio Grande do Sul, Brazil 2. Instituto de Química, Universidade Federal do Rio Grande do Sul, Av. Bento Gon?alves 9500, 91509-900, Porto Alegre, Rio Grande do Sul, Brazil 3. Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Av. Bento Gon?alves 9090, 90540-000, Porto Alegre, Rio Grande do Sul, Brazil 4. Programa de Pós Gradua??o em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Av. Ipiranga 2752, 90610-000, Porto Alegre, Rio Grande do Sul, Brazil |
| Abstract: | The chemical composition of the essential oil obtained by hydrodistillation of the aerial parts of Piper amalago, Piper mikanianum, and Piper xylosteoides was elucidated by gas chromatography (GC) and GC/mass spectrometry analyses. P. mikanianum and P. xylosteoides essential oils presented phenylpropanoids as their main compounds (67.89% and 48.53%, respectively) whereas P. amalago was rich in monoterpene and sesquiterpene hydrocarbons (84.95%). The essential oils obtained were investigated for their effect on newly hatched larvae of the cattle tick, Rhipicephalus (Boophilus) microplus. The essential oil of P. mikanianum (LC50 2.33 μL/mL) was more active than that of P. xylosteoides (LC50 6.15 μL/mL) against the larvae, while the oil of P. amalago was inactive. These results suggest that phenylpropanoids, mainly apiol and safrole, are responsible for the acaricidal activity. |
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