Résumé
This article reports an ecofriendly approach for the synthesis of Ag nanoparticles (Ag NPs) using aqueous leaf extract of Curcuma aromatica. The synthesized Ag NPs were characterized using UV-visible spectroscopy, FTIR, XRD and TEM analyses. UV–Visible spectra of the aqueous medium containing Ag NPs showed a gradual decrease of the absorbance peak observed at 442 nm. The biomolecules responsible for the reduction of Ag NPs were analyzed by FTIR. XRD result confirmed the presence of AgNPs with FCC crystal structure. The calculated crystalline size using Scherrer formula is in the range from 20 to 80 nm. TEM analysis ascertained spherical nature of the Ag NPs. The synthesized Ag NPs exhibited good antibacterial performance against gram-positive and gramnegative bacteria strains, which was studied using standard disc diffusion method. The synthesis of Ag NPs by this method is rapid, cost effective and can be used for various applications.