Mosquito larvicidal properties of various extract of leaves and fixed oil from the seeds of Caesalpinia bonduc (L) Roxb.
A Preliminary laboratory trial was undertaken to determine the efficacies of petroleum ether, ethanolic, aqueous extracts of dried leaves and fixed oil from the seeds of Caesalpinia bonduc (L). Roxb (Family: Caesalpiniaceae) at various concentrations against the fourth instar larvae of Culex quinquefasciatus by following the WHO guidelines. Hundred per cent mortality was observed in 1% concentration of petroleum ether and ethanolic extract of leaf, whereas it was 55% in 2.5% concentration of aqueous extract and 92.6% in 2.5% concentration of fixed oil. The active constituent responsible for the mortality is to be isolated to come up with a promising larvicidal agent, which will be economic, non pollutant and ecofriendly.
Saravanan
K Sundare
KS
Department of Pharmacognosy, Madurai Medical College, Madurai-20, Tamil Nadu, India.
Periyanayagam
K
K
Ismail
M
M
D000818:Animals; D029911:Caesalpinia; D003465:Culex / Q000187:drug effects*; D007306:Insecticides / Q000494:pharmacology*; D007928:Lethal Dose 50; D010936:Plant Extracts / Q000494:pharmacology*; D010938:Plant Oils / Q000494:pharmacology*
D007306:Insecticides; D010936:Plant Extracts; D010938:Plant Oils