Abstract
The present study aimed to synthesize silver nanoparticles (AgNps) having antibacterial properties. Two fungal strains, viz Aspergillus niger and A. terreus were procured from NCIM, Pune. And were used to synthesize silver nanoparticles by reduction and precipitation of AgNO3 . The aqueous plant extract of Neem (Azadiracta indica) leaves was prepared for the synthesis of AgNps. All the AgNps derived from fungi and plant sources were evaluated for antibacterial properties against known laboratory pathogens. The obtained nanoparticles were characterized using a UV-visible spectrophotometer and SEM. Silver nanoparticles were produced significantly from A. niger at 400nm and A. Terreus at 400 nm. The aqueous extract of the neem plant showed maximum absorption at 500 nm. Also, the extract nanoparticles showed the highest antibacterial activity against E. coli, Proteus vulgaris, Pseudomonas spp, Salmonella paratyphi-A and S. aureus.
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