Mosquito Repellent activity of Syzygiumaromaticum(clove) against Malaria Vector, Anopheles stephensi

Repellent potential of acetone, hexane and ethyl acetate extracts of Syzygium aromaticum (clove) was screened under laboratory conditions against malaria vector Anopheles stephensi Liston (Diptera: Culicidae) and compared with the DEET (N, N Diethyl 1-3 methyl Benzamide, formerly known as diethyl 1-m-toluamide). Results obtained from the laboratory experiments showed that the hexane extract of clove was more effective for repellency of malaria vector, Anopheles stephensi even at 2.5, 5 and 10% concentrations. Clear dose response relationships were established with the highest dose of 5% clove extract evoking 100% repellency. Percent protection obtained against An. stephensi was 100% repellency in 6 hours. DEET- 2.5% showed 100% repellency in 6 hours against the target organism.