green synthesis of silver nanoparticles using litsea glutinosa l. leaves and stem extracts and their antibacterial efficacy

The present study explores the green approach for the preparation of silver nanoparticles (agnps)through the reduction of silver nitrate by the cell-free stem and leaf aqueous extracts of litsea glutinosa(l.glutinosa) and its potential antibacterial activity. the analytical instruments include scanning electronmicroscopy, fourier transforms infrared spectroscopy, uv-visible spectroscopy, and x-ray diffractionspectroscopy confirmed the synthesis of smaller, uniformly spherical agnps (10-40 nm). the averagecrystalline size of prepared agnps produced by l. glutinosa leaf extract was found to be 19 mm. fromuv-visible spectral analysis, the maximum absorbance peak appeared at 444 nm for leaf extract agnpsdifferent from stem extract agnps (422 nm), which are found to be specific for agnps. the l.glutinosastem extract-assisted agnps have shown significant antibacterial activity against bacillus subtilis (grampositive)and escherichia coli (gram-negative) in comparison to gentamycin. hence, the agnps obtainedby green synthesis can be therapeutically explored against bacterial infections.