Enhanced Repellency of Binary Mixtures of Zanthoxylum armatum Seed Oil, Vanillin, and Their Aerosols to Mosquitoes Under Laboratory and Field Conditions
Autor(es): Kwon, Hyung Wook; Kim, Soon-Il; Chang, Kyu-Sik; Clark, J. Marshall; Ahn, Young-Joon
Resumo: The repellency of Zanthoxylum armatum seed oil (ZA-SO), alone or in combination with vanillin (VA), its six major constituents, and another four major previously known Zanthoxylum. piperitum fruit oil constituents, as well as aerosol products containing 5 or 10% ZA-SO and 5% VA, was evaluated against female Aedes aegypti in laboratory and field studies. Results were then compared with those of N,N-diethyl-3-methylbenzamide (DEET) as a standard. Hand in cage laboratory tests showed that 0.2, 0.1, and 0.05 mg/cm(2) ZA-SO resulted in >92% protection through 30-min postexposure and was not significantly different than 0.05 mg/cm(2) DEET. Skin treated with linalool and limonene (from Z. armatum) provided >80% repellency to female Ae. aegypti at 10-min exposure, whereas cuminaldehyde, citronella!, geranyl acetate, and cuminyl alcohol (from Zanthoxylum piperitum) provided >90% protection during this same time period. Only cuminaldehyde and citronellal provided complete protection comparable to DEET at 10-min postexposure. After that time, repellency of all plant constituents to mosquitoes was considerably decreased ( Palavras-Chave: Zanthoxylum armatum; Zanthoxylum piperitum; Natural mosquito repellent; Vanillin; Binary mixtures Imprenta: Journal of Medical Entomology, v. 48, n. 1, p. 61-66, 2011 Identificador do objeto digital: 10.1603/ME10042 Descritores: Aedes aegypti - Repellent ; Aedes aegypti - Public health Data de publicação: 2011
