The field of nanotechnology is one of the most active researches nowadays in
modern material science and technology. Eco friendly methods of green mediated
synthesis of nanoparticles are the present research in the limb of nanotechnology.
The present work leads to the synthesis of nanoparticles from 1mM AgNO3solution
through aqueous leaf extract of Azhadirachta indica as reducing as well as capping
agent. Synthesized nanoparticles are characterized under UV-Vis spectroscopy at
the range of 350-420nm. The peak showed at 351nm. Further this range and size
was confirmed by Particle Size Analyzer. The chemical groups studied using FT-IR
analysis. Green synthesized silver nanoparticle showed zone of inhibition against
isolated Gram positive (Salmonella typhi) and Gram negative (Klebsiella
pneumoniae) bacteria. The leaf extract shows higher antioxidant activity found by
DPPH assay and Hydrogen Peroxide assay.Based on the result obtained it can be
said that the plant resources can efficiently used in the prouction of silver
nanoparticle and it could be utilized in various fields such as biomedical,
nanotechnology and so on