Green Synthesis of Silver Nanoparticles from Tectona grandis Seeds Extract and Formation of Silver Nanoparticles-Alginate Composite Beads

摘要

Silver nanoparticles have found eminence applications in various fields due to their activity against many drugresistant pathogens. Green synthesis of nanoparticles is not hazardous and is eco-friendly as compared to chemical synthesis.The present studies for the first time utilizes Tectona grandis (teak) seeds extract for reduction of 1mM silver nitrate solution tosilver nanoparticles. The method proved to be very simple, cost efficient and convenient. Synthesis of silver nanoparticles wasconfirmed by visual detection in which the colorless solution gets changed to brown colored solution. Further characterizationwas done by UV-visible spectroscopy, XRD, FTIR analysis, SEM/EDS. The prepared silver nanoparticles were entrapped incalcium alginate beads to produce Nano Incorporated beads. Adsorption reduction beads were also prepared using in situreduction of Ag+ by seed extract solution. The prepared beads were checked for their antimicrobial activity against E. coli,Pseudomonas aeruginosa, Bacillus cereus and Bacillus subtilis.