2012•Unpublished venueRequires access

Mosquito Repellence of Astrolochii hepii, Cymbopogon citratus and Ocimum gratissimum Extracts and Mixtures

D. Chauruka

Abstract

The repellences of Astrolochii hepii, Cymbopogon citratus and Ocimum gratissimum extracts and mixtures were studied using a block design experiment involving volunteers’ hands in cage with hungry laboratoty bred malaria-free Aedes aegypti mosquitoes at the Ministry of Health Research Institute in Harare, Zimbabwe in 2010 using DEET as standard. Ocimum gratissimum gave 100% repellence for 0.5h; Astrolochii hepii for i.0h and Cymbopogon citratus for 1.5h. The mixtures: Ocimum gratissimum/ Astrolochii hepii gave 100% repellence for 1.5h; Ocimum gratissimum/ Cymbopogon citratus for 2.5h and Astrolochii hepii/ Cymbopogon citratus for 3.5. This indicated that constituents of mixtures of extracts reinforced each other to repel mosquitoes.

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Key concepts: Cymbopogon citratus, Ocimum gratissimum, Traditional medicine, Ocimum, Basilicum, DEET, Biology, Essential oil