Green Synthesis of Bio-Active Silver Nanoparticlesfrom Insect Gall Extracts as Potent Anti-microbial Agents

Synthesis of nanoparticles of metals using natural plant extracts has gained muchattention these days. Here silver nano particles are produced by facile method of biogenic synthesis using extracts of insect gall which is a common infection onZizipusjijube plant. The aqueous extracts of the dried galls were used for thesynthesis of silver nanoparticles (AgNPs) which were then screened for their antimicrobial activity. The morphology, size and functional groups present inAgNPs was evaluated using electron microscopy and Fourier Transform InfraredSpectroscopy- FTIR analysis. Also, UV–Vis spectroscopy confirmed the formationof particles. X-ray diffraction analysis-XRD. The diffractogram revealed thecharacteristics of particles. The mean diameters of the nanoparticles were between20 nm, and they had moderate antimicrobial activity against gram positive andgram-negative bacteria than gall extract alone.