Essential oil and fractions isolated of Laurel to control adults and larvae of cattle ticks |
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Authors: | Carla Maria Mariano Fernandez Maurício Ferreira da Rosa Ana Claudia Aparecida Mariano Fernandez Wanessa de Campos Bortolucci Fabiana Borges Padilha Ferreira Giani Andrea Linde |
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Institution: | 1. Postgraduate Program in Pharmaceutical Sciences, State University of Western Parana, Cascavel, Parana, Brazil;2. carla.mfernandez@hotmail.com;4. Postgraduate Program in Biotechnology Applied to the Agriculture, Paranaense University, Umuarama, Parana, Brazil;5. Postgraduate Program in Health Sciences, State University of Maringa, Maringa, Paraná, Brazil |
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Abstract: | AbstractThis study, was to evaluate the acaricidal effect of the essential oil (EO) and fractions (FR) obtained from Laurus nobilis leaves on Rhipicephalus (Boophilus) microplus. Eight fractions were obtained, however FR1: sabinene (37.83%), β-pinene (13.50%), 1,8-cineole (12.66%), α-pinene (12.56%) and FR8: α-terpineol (79.19%) were highlighted as to the larvicidal potential when submitted by Larval Packet Test. The EO was tested by the Adult Immersion Test, at concentrations of 200.00; 100.00 and 50.00?µL/mL caused mortality of engorged females, egg mass reduction and hatching inhibition. Two fractions are shown to be efficient in controlling larvae FR8 (LC50?=?0.13?µL/mL, LC99?=?0.51?µL/mL) and FR1 (LC50?=?0.20?µL/mL, LC99?=?0.56?µL/mL). The fractionation of EO was determinant to elucidate which compounds were responsible for the larvicidal potential. This study opens new perspectives to direct new bioassays with the compounds obtained in the fractionation, since they present high potential on cattle tick larvae. |
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Keywords: | Laurus nobilis α-terpineol linalool sabinene Rhipicephalus (Boophilus) microplus |
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