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Green nanoparticle synthesis was achieved using environmentally acceptable plant extracts and eco-friendly reducing and capping agents. In the present study, activity of silver nanoparticles (AgNPs) synthesized using Cadaba indica lam plant against Anopheles stephensi and Culex quinquefasciatus was determined. A range of concentrations of synthesized AgNPs (3.125, 6.25, 12.5, 25, 50 ppm) and crude extract (50, 100, 150, 200, 250 ppm) were tested against A. stephensi and C. quinquefasciatus. The synthesized AgNPs from C. indica lam were much more toxic than crude extract in both mosquito species. The cured extract high mortality values were 50% lethal concentration (LC50)=88.22, 90.84 ppm; 90% lethal concentration (LC90)=172.94, 178.55 ppm, and the AgNPs high mortality values were LC50=3.90, 4.39 ppm; LC90=19.04, 17.35 ppm against A. stephensi and C. quinquefasciatus, respectively. The results recorded from ultraviolet-visible spectrophotometer, scanning electron microscopy, energy dispersive X-ray and Fourier transformed infrared support the biosynthesis and characterization of silver nanoparticles. These results suggest that the leaf cured extracts of C. indica lam and green synthesis of silver nanoparticles have the potential to be used as an ideal eco-friendly approach for the control of A. stephensi and C. quinquefasciatus.
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