Sunlight mediated rapid synthesis of small size range silver nanoparticles using Zingiber officinale rhizome extract and its antibacterial activity analysis

Herein we report the green synthesis of silver nanoparticles (AgNPs) completed within a rapid time of 2 hrs using Zingiber officinale rhizome extract in presence of sunlight. Characterization of nanoparticles was carried out by UV-Vis spectroscopy, HR-TEM, XRD and FTIR. Under TEM analysis, the size of the biosynthesized AgNPs was found to be remarkably small with size range of 4 to 15 nm. The AgNPs also exhibited excellent antibacterial activity against Staphylococcus aureus and Escherichia coli. MIC and MBC was found to be 62.5 mu g/mL and 500 mu g/mL for S. aureus, 125 mu g/mL and 250 mu g/mL for E. coli respectively.