Journal
PARASITOLOGY RESEARCH
Volume 107, Issue 1, Pages 243-248Publisher
SPRINGER
DOI: 10.1007/s00436-010-1878-y
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- CAPES
- FAPERGS
- CNPq
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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 A mu L/mL) was more active than that of P. xylosteoides (LC50 6.15 A mu L/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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