GREEN SYNTHESIS AND BACTERICIDAL ACTIVITY OF SILVER NANOPARTICLES USING TRYPTOPHAN WITH MICROWAVE ASSISTED METHOD

Colloidal silver nanoparticles are utilized in various high end technology applications and in efficient drug delivery. The silver nanoparticles were synthesized using alkaline 1mM tryptophan solution under microwave irradiation. The green method yields approximately 16 - 21 nm silver nanoparticles of uniform morphology. Synthesis of colloidal silver nanoparticles was monitored by UV-Visible spectroscopy by taking UV spectra in between 300 to 600 nm and Scanning Electron Microscopy (SEM). The efficiency of synthesized silver nanoparticles was studied by agar well diffusion method against standard culture of Escherichia coli and Staphylococcus aureus.