Eucalyptus oil nanoemulsion as potent ovicidal and pupicidal agent against Aedes aegypti Linnaeus

Byadmin

Navkiran Kaur , Devinder Kaur Kocher*

Abstract:

Aedes aegypti is responsible for the spread of various public health diseases globally. Synthetic insecticides are commonly used to control Ae. aegypti, however regular and over use of these chemicals has resulted in mosquito resistance, human health issues and environment contamination. Essential oils (EOs) derived from plants are natural alternatives to replace the commercial synthetic insecticides. This study was conducted with the objective to extract oil from eucalyptus leaves, perform its chemical characterization, prepare its nanoemulsion and then study its ovicidal and pupicidal activity. GCMS analysis indicated Cineole (41.77%) and α-Terpilene (13.68%) as the major components of extracted eucalyptus oil. Out of the tested concentrations, 70 ppm of eucalyptus oil nanoemulsion exhibited 100% inhibition of egg hatching and exposure of this concentration also resulted in maximum per cent pupicidal mortality (77.33±6.11 in male and 70.67±8.33 in female). Efficient ovicidal and pupicidal properties of eucalyptus oil nanoemulsion indicated its potential to be used as bio-insecticide for the control of Ae. aegypti before their emergence.

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