In the present investigation the green synthesis of ZnO nanoparticles was carried out by using aqueous fruit extract of Emblica officinalis .Optimization for substrate (Zinc acetate) concentration was evaluated for 1mM, 50mM and 100mM. The biogenic ZnO nanoparticles were characterized by UV-Visible spectrophotometry and FTIR (Fourier-Transform Infrared Spectroscopy). It was found that only in 100mM concentration of zinc acetate ZnO nanoparticles were synthesized having peaks at 350nm,370nm,390nm and 410nm .FTIR analysis reveals that flavonoids were capping agent for biogenic ZnO nanoparticles and amines were found to be reducing agent. Antibacterial potential of ZnO nanoparticles was tested on Salmonella typhi confirming antibacterial activity for the same.
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