Bioreduction: the biological activity, characterization, and synthesis of silver nanoparticles

Abstract

Today, nanoparticles are effectively used in different areas. Initially, physical and chemical methods wereused in the synthesis of nanoparticles. Biosynthesis (green synthesis) has emerged as an alternative to overcome thetoxic effects of chemically synthesized nanoparticles. In this study, green synthesis of silver nanoparticles (AgNPs) withthe leaf extract of Anthurium andraeanum was performed. UV-Vis spectrophotometry, scanning transmission electronmicroscopy, and XRD were applied to characterize the biosynthesized nanoparticles. As a result of the characterization,the spectra showed that a spectrum at a wavelength of about 419 nm and a spherical size of 38 nm nanoparticles wasformed. Antibacterial and biofilm inhibition activities of AgNPs against gram-positive and gram-negative bacteria weredetermined. AgNPs at a concentration of 1 mg/mL showed antibacterial activity against all of the bacterial strains. Inthe antibiofilm activity study, the highest inhibition percentage was obtained against the P. fluorescens strain at 87.1%,at a concentration of 0.5 mg/mL.