Synthesis of silver nanoparticle using Juniperus procera and it's larvicidal activity against dengue and zika viruses vector Aedes aegypt imosquito

摘要

Abstract: The present study was planned to use the ethanolic leaves extract of Juniperusprocera as a bio-factor to the reduction of silver nitrate to silver nanoparticles and evaluate the larvicidal activity of plant extracts only and plant extracts with silver nanoparticles against Aedes aegypti. UV-Vis spectrum, Scanning electron microscope (SEM) and Fourier Transform Infrared Spectroscopy were used to characterized the silver nanoparticles. According to LC50 values (concentration which to kill 50% of larvae), The results showed that the plant extracts with silver nanoparticles (30.49 ppm) proved to be more effective against the mosquito Ae. aegypti than the plant extracts alone (111.17 ppm) by about 3.65 times. It is evident that from our results that the extract of the J. procera and the silver nanoparticles could be used on a safety method of control on the larvae of the dengue fever and Zika viruses vector.