Abstract
Aedes aegypti mosquitoes are responsible for transmission of many viral diseases, such as Zika fever, dengue fever, yellow fever, and chikungunya. Emergence of resistance to currently used pesticides among mosquitoes has increased the importance for the search for novel mosquito control agents. Natural products, particularly plant and microbe derived secondary metabolites, are good sources in the search for such compounds. Ammi visnaga (Lam.) Lamarck is a plant in the Apiaceae family native to North Africa, Europe, and Asia. In the search for environmentally benign and effective insecticides as part of an ongoing joint effort between the USDA (US Department of Agriculture) and the DWFP (Deployed War Fighter Protection) program sponsored by the Department of Defense, we have investigated ethyl acetate extract of A. visnaga seeds. Two furanochromones, khellin and visnagin that exhibited larvicide activity against Aedes aegypti mosquito larvae were isolated from the ethyl acetate extract of the seeds by bioassay-guided fractionation. This is the first report of mosquito larvicidal activity of khellin and visnagin.
Highlights
Ammi visnaga (Lam.) Lamarck is a plant in the Apiaceae family that is native to North Africa, Europe and Asia
In the search for environmentally benign and effective insecticides as part of an ongoing joint effort between the USDA (US Department of Agriculture) and the DWFP (Deployed War Fighter Protection) program sponsored by the Department of Defense, we have investigated ethyl acetate extract of A. visnaga seeds
This is the first report of mosquito larvicidal activity of khellin and visnagin
Summary
Ammi visnaga (Lam.) Lamarck is a plant in the Apiaceae family that is native to North Africa, Europe and Asia. The flowers of this plant are white and composed of umbel, which is characteristic for the Apiaceae family. Plants in the apiaceae family are good sources of biologically active compounds [3]-[5]. We describe the bioassay guided isolation of mosquito larvicide active constituents of ethyl acetate extract of A. visnaga seeds
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