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Tick repellent substances in the essential oil of Tanacetum vulgare
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolution, Genomics and Systematics. (Medicinsk entomologi)
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolution, Genomics and Systematics. (Medicinsk entomologi)
2008 (Swedish)In: Journal of medical entomology, ISSN 0022-2585, E-ISSN 1938-2928, Vol. 45, no 1, 88-93 p.Article in journal (Refereed) Published
Abstract [en]

The repellent effect of the essential oils of flower heads of the aromatic plant tansy, Tanacetum vulgare L. (Asteraceae), originating from Sweden, was tested against host-seeking nymphs of the common tick Ixodes ricinus (L.). The essential oils were obtained by steam distillation (SD) and by using an online solvent extraction separation setup. Further fractionations of the SD oils were obtained by medium-pressure liquid chromatography on silica gel. The volatiles of the essential oils and the fractions that exhibited strong tick repellency (90-100%) were collected by solid phase microextraction and identified by gas chromatography-mass spectrometry. The chemical analyses of the oils show that the populations of T. vulgare from Uppsala and Stockholm may represent different chemotypes, but that they exhibited similar tick repellency. Main volatiles detected from oils of T vulgare collected at Uppsala were a-pinene (27%), beta-pinene (11%), pinocamphone (11%), 1,3,3-trimethylcyclohex-l-ene-4-carboxaldehyde (11%), and 1,8-cineole (10%). In the sample collected in Stockholm, the main components were beta-thujone (39%) and camphor (23%) followed by a-thujone (11%) and 1,8-cineole (8%). When constituents in the oils, e.g., alpha-terpineol, 4-terpineol, alpha + beta-thujone, 1,8-cineol, verbenol, and verbenone, were tested separately (each diluted 0.5%, vol:vol), 64-72% tick repellency was obtained.

Place, publisher, year, edition, pages
2008. Vol. 45, no 1, 88-93 p.
Keyword [en]
Ixodes ricinus, Tanacetum vulgare, essential oil, terpenoids, tick repellents
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-16262ISI: 000252635500013PubMedID: 18283947OAI: oai:DiVA.org:uu-16262DiVA: diva2:44033
Available from: 2008-05-14 Created: 2008-05-14 Last updated: 2017-12-08Bibliographically approved

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