In this study the combined plant leaf extract of P.guajava and F.benghalensis were used for the production of silver
nanoparticles and the green synthesized silver nanoparticles were used to prepare the nanobased mouthwash and its
antimicrobial activity was evaluated against the oral infection causing microorganisms . The UV-Visible spectra of the
synthesized nanoparticles were demonstrated the C-H bond of the plant extracts. The FTIR results explained the presence of
biomolecules and the intense peaks value demonstrated the linkages of biomolecules in the synthesized nanoparticles.
Keywords: Green synthesis, silver nanoparticles, FTIR spectra, UV-Visible spectrometer, antimicrobial activity.