Effect of Synergist Piperonyl Butoxide (PBO) on the Toxicity of Some Essential Oils against Mosquito Larvae.
Loading...
Date
2008-12
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Effect of a known synergist piperonyl butoxide on the toxicity of steam
distillate essential oils of Jamarosa (Cymbopogan nardus), Pacholli
(Pogostemon pacholli), Basil (Ocimum basilicum), and Peppermint
(Mentha pipreta) plant species against Anopheles stephensi larvae were
evaluated. The purpose of the present study was to identify the insecticidal
potential of these oils against mosquito larvae. The Piperonyl Butoxide
(PBO) was used to enhance the activity of these oils with the aim of
developing essential oil based formulations.
The bioassays of these oils with and without PBO were performed
against late 3rd instar larvae of An. stephensi. The LC values against An. 50
stephensi were 44.19 ppm for Ocimum basilicum oil, followed by, Mentha
pipreta, Cymbopogan nardus, and Pogostemon pacholli oil which gave LC 50
values above 250 ppm. Thus in the present study the Ocimum basilicum oil
was found to be most effective, whereas Pogostemon pacholli oil was
found to least effective against mosquitoes for larvicidal action. The effect
of synergist PBO led to the enhancement of toxicity of oils, the LC value 50
for Ocimum basilicum were reduced from 44.19 ppm to 23.87 ppm.
Similarly the oil of Pogostemon pacholli showed most significant results
where the LC value was >250 ppm it was reduced to 50 ppm with PBO.
Description
Keywords
Larvicidal Activity, Mosquitoes, Essential Oils, Piperonyl butoxide
Citation
Yadav S, Mittal P K, Saxena P N,Singh R K. Effect of Synergist Piperonyl Butoxide (PBO) on the Toxicity of Some Essential Oils against Mosquito Larvae. Journal of Communicable Diseases. 2008 Dec; 40(4): 263-268.