Demiray, Hatice; Estep, Alden S.; Tabanca, Nurhayat; Becnel, James J.; Demirci, Betul published the artcile< Chemical constituents from Rheum ribes shoots and its insecticidal activity against Aedes aegypti>, Category: esters-buliding-blocks, the main research area is methyl linoleate insecticidal Rheum Aedes.
A phytochem. investigation of hexane extract of Rheum ribes L., Polygonaceae, shoots was analyzed by gas chromatog. with flame ionization dection and mass specrometry and revealed seven components including Me hexadecanoate (Me palmitate) (2.4%), (Z)-9-Me octadecenoate (Me oleate) (2.9%), (Z,Z,Z)-9,12,15-Me octadecatrienoate (Me linolenate) (3.5%), 1-octadecanol (4.3%), (Z,Z)-9,12-Me octadecadienoate (Me linoleate) (5.7%), heptacosane (13.5%), and hexadecanoic acid (palmitic acid) (67.7%). The hexane extract was bioassayed for larvicidal and adult topical activity against an insecticide susceptible strain of Aedes aegypti, the yellow fever mosquito. Results demonstrated a 90% mortality against adults at 5μg/mosquito and first instar larvae at 1μg/μl. The major compound hexadecanoic acid showed 20% mortality at 6.25 ppm against adults whereas the compound provided 100% mortality at the highest screening dose of 1000 ppm against 1st instar larvae. The mosquitocidal activity of the analyzed plant material may be related to a specific combination of compounds present in the hexane extract Graphical abstract
Revista Brasileira de Farmacognosia published new progress about Aedes aegypti. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Category: esters-buliding-blocks.
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