Repellency of essential oils of some Kenyan plants against Anopheles gambiae
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Date
2004-10
Authors
Hassanali, Ahmed
Lwande, W.
Ndiege, I. O.
Okinyo, Denis
Omolo, Maurice O.
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Abstract
Essential oils of six plants growing in Kenya were screened for repellent activities against Anopheles gambiae sensu stricto. The oils of Conyza newii (Compositeae) and Plectranthus marrubioides (Labiateae) were the most repellent (RD50 = 8.9 × 10−5 mg cm−2, 95% CI) followed by Lippia javanica (Verbenaceae), Lippia ukambensis (Verbenaceae), Tetradenia riparia, (Iboza multiflora) (Labiateae) and Tarchonanthus camphoratus (Compositeae). Eight constituents of the different oils (perillyl alcohol, cis-verbenol, cis-carveol, geraniol, citronellal, perillaldehyde, caryophyllene oxide and a sesquiterpene alcohol) exhibited relatively high repellency. Four synthetic blends of the major components (present in ⩾1.5%) of the essential oils were found to exhibit comparable repellent activity to the parent oils.
Description
http://dx.doi.org/10.1016/j.phytochem.2004.08.035
Keywords
Anopheles gambiae, Repellent plants, Essential oils, Terpenoids, Alcohols, Epoxides
Citation
Phytochemistry Volume 65, Issue 20, October 2004, Pages 2797–2802