IJSR - International Journal of Scientific Research

P. Manjusha; Soam Prakash

Volume : VIII, Issue : II, February - 2019

Biosynthesis of Silica nanoparticles from Saccharum officinarium bagasse and its efficacy against Culex quiquefasicatus (Say) larvae.

P. Manjusha, Soam Prakash

Abstract :

Major vector borne diseases are prevalent in tropical and subtropical parts of the world. Mosquitoes are the major vectors immensely creating health problems to mankind cattle as they carry several pathogens. In view of public health, environmental care and insecticide resistance, appropriate actions must be opted to reduce the growth of mosquitoes. A biosynthesized nanoparticles have potency against the target organisms without effecting the environment. In our present study we have biosynthesized ecofriendly and cost effective silica nanoparticles from non– edible plant waste of Saccharum officinarium, followed by characterization and bioassays. The formation of Silica nanoparticles were characterized and confirmed by Transmission Electron microscope (TEM), UV–Vis spectrophotometry, and X–Ray diffraction (XRD ) analysis. Efficacy of biosynthesized Silica Nanoparticles was performed against the 2^nd and 3^rd Instar larvae of Culex quinquefasicatus and mortality responses were recorded after an exposure of 24h and 48h. The Lethal Concentration (LC₅₀)was calculated by probit analysis. LC₅₀values for 2^ndinstars was 4.4 mg/ml after 24h and 3.8 mg/ml after 48 h. The synthesized silica nanoparticles showed effective larvicidal properties and thus can be used to control the mosquito population,especially Filaria and viral vector Culex quinquefasicatus. This study is performed to specifically generate the efficacy from a hydrophobic Silica nanoparticles which can be used for many vectors globally.