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Chemical Composition and Repellency of Essential Oils From Four Medicinal Plants Against Ixodes ricinus Nymphs (Acari Ixodidae)
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Medicinal Chemistry, Division of Pharmacognosy.
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2012 (English)In: Journal of medical entomology, ISSN 0022-2585, Vol. 49, no 5, 1067-1075 p.Article in journal (Refereed) Published
Abstract [en]

In our search for effective tick repellents from plant origin, we investigated the effect of essential oils of four medicinal and culinary plants belonging to the family Lamiaceae on nymphs of the tick Ixodes ricinus (L.). The essential oils of the dry leaves of Rosmarinus officinalis (Rosemary) (L.), Mentha spicata (Spearmint) (L.), Origanum majorana (Majoram) (L.), and Ocimum basilicum (Basil) (L.) were isolated by steam distillation and 15 mu g/cm(2) concentration of oils was tested against ticks in a laboratory bioassay. The oils of R. officinalis, M. spicata, and O. majorana showed strong repellency against the ticks 100, 93.2, and 84.3%, respectively, whereas O. basilicum only showed 64.5% repellency. When tested in the field, the oils of R. officinalis and M. spicata showed 68.3 and 59.4% repellency at a concentration of 6.5 mu g/cm(2) on the test cloths. The oils were analyzed by gas chromatography mass spectrometry and the major compounds from the most repellent oils were 1,8-cineole, camphor, linalool, 4-terpineol, borneol, and carvone.

Place, publisher, year, edition, pages
2012. Vol. 49, no 5, 1067-1075 p.
Keyword [en]
medicinal plant, Ixodes ricinus, essential oil, GC-MS
National Category
Chemical Sciences
URN: urn:nbn:se:uu:diva-183227DOI: 10.1603/ME11250ISI: 000308924100014OAI: oai:DiVA.org:uu-183227DiVA: diva2:562697
Available from: 2012-10-25 Created: 2012-10-23 Last updated: 2012-10-25Bibliographically approved

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El-Seedi, Hesham R.Göransson, Ulf
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