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Evaluation of extracts and oils of mosquito (Diptera: Culicidae) repellent plants from Sweden and Guinea-Bissau
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
2006 (English)In: Journal of medical entomology, ISSN 0022-2585, E-ISSN 1938-2928, Vol. 43, no 1, 113-119 p.Article in journal (Refereed) Published
Abstract [en]

In laboratory tests, ethyl acetate extracts of Hyptis, suaveolens Poit. from Guinea-Bissau and Rhododendon tomentosum (Stokes) H. Harmaja (formerly Ledum palustre L.) and Myrica gale L. significantly reduced probing activity of Aedes aegypti (L.). In the field in southern Sweden, extracts of leaves of R. tomentosum, M. gale, and Achillea millefolium L. significantly reduced biting by Aedes mosquitoes. Volatile compounds from M. gale, R. tomentosum, A. millefolium, and H. suaveolens were collected by solid phase microextraction (SPME). Alternatively, compounds in the plants were subjected to extraction by organic solvents of different polarities or by steam distillation and collection by SPME. Compounds collected were identified by gas chromatography-mass spectrometry. Leaves of H. suaveolens contained mainly beta-caryophyllene, bergamotene, and terpinolene. The volatile fraction of an ethyl acetate extract of H. suaveolens was collected by SPME and included beta-caryophyllene, (-) -sabinene, beta-pinene, limonene, alpha-pinene, and bergamotene. The main volatiles detected were alpha-pinene, alpha-phellandrene, myrcene, and limonene from M. gale leaves or inflorescences; pcymene, sabinene, and terpinyl acetate from leaves of R. tornentoston; and (-)-germacrene D, beta-pinene, sabinene, and alpha-pinene from A. millefolium leaves or inflorescences. The selected plant species contained numerous volatiles known to have insecticidal, acaricidal, pesticidal, and/orinsect repellent properties.

Place, publisher, year, edition, pages
2006. Vol. 43, no 1, 113-119 p.
Keyword [en]
essential oils, Guinea-Bissau, mosquito repellents, phytochemicals, Sweden, achillea-millefolium l, suaveolens l. poit., hyptis-suaveolens, insect repellents, culex-pipiens, west-africa, products, constituents, volatiles, deet
Identifiers
URN: urn:nbn:se:kth:diva-15378ISI: 000234700300017Scopus ID: 2-s2.0-31644443868OAI: oai:DiVA.org:kth-15378DiVA: diva2:333419
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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