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dc.contributor.authorArpaporn Chansangen_US
dc.contributor.authorDanita Champakaewen_US
dc.contributor.authorAnuluck Junkumen_US
dc.contributor.authorDoungporn Amornlerdpisonen_US
dc.contributor.authorUdom Chaithongen_US
dc.contributor.authorAtchariya Jitpakdien_US
dc.contributor.authorDoungrat Riyongen_US
dc.contributor.authorAnchalee Wannasanen_US
dc.contributor.authorJitrawadee Intirachen_US
dc.contributor.authorRoongtawan Muangmoonen_US
dc.contributor.authorBenjawan Pitasawaten_US
dc.description.abstract© 2018, SEAMEO TROPMED Network. All rights reserved. In order to search and develop a new and more efficacious natural alternative to synthetic chemicals for mosquito control, plants belonging to families known to possess insecticidal properties were selected for investigation of their lethal potential to adult stage. Essential oils isolated from eight indigenous plants using steam distillation were screened individually at a discriminating dosage (15 mg/mg insect) for topical toxicity towards adult female Aedes aegypti, Mueang Chiang Mai-susceptible (MCM-S) strain. Dose-response bioassays of the effective oils indicated Cinnamomum verum bark oil, LD50value of 3.37 µg/mg female insect, as the most effective agent against MCM-S Ae. aegypti. Chemical analysis by gas chromatography-mass spectrometry revealed 16 different compounds, constituting 98.3% of C. verum oil composition, the most abundant being cinnamaldehyde (90.2%), followed by 2-propanyl benzene (4.2%) and 3-phenylpropanal (1.2%). LD50value of C. verum oil and cinnamaldehyde against adult female MCM-S Ae. aegypti was 3.37 and 3.49 µg/mg, respectively, and 3.27 and 3.73 µg/mg, respectively, against adult female Pang Mai Dang-resistant (PMD-R) Ae. aegypti, over 1,000 folds less potent than of permethrin, with LD50value of 0.43 and 3.72 ng/mg female against MCM-S and PMD-R strain, respectively. Although permethrin was more effective than C. verum oil (and cinnamaldehyde) against adult female Ae. aegypti, the former similar effectiveness against both MCM-S and PMD-R strains indicate the potential of developing C. verum oil and/or its main bioactive comstituents as natural alternative insecticides to synthetic chemical agents currently employed against adult female Ae. aegypti, a vector of dengue virus.en_US
dc.titlePotential of natural essential oils and cinnamaldehyde as insecticides against the dengue vector aedes aegypti (Diptera: Culicidae)en_US
article.title.sourcetitleSoutheast Asian Journal of Tropical Medicine and Public Healthen_US
article.volume49en_US of Medicine, Thammasat Universityen_US Mai Universityen_US Universityen_US
Appears in Collections:CMUL: Journal Articles

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