The current study was aimed to synthesize and characterize Taverniera nummularia crude methanolic extract gold nanoparticles and to explore their biological potential. The gold nanoparticles synthesis was carried out by using previously reported protocol. The characterization of the nanoparticles was done by using various techniques including UV-Visible, FT-IR spectroscopy and XRD techniques. The extract assisted gold nanoparticles were synthesized at a wavelength of 520nm. The UV-vis spectroscopy of synthesized gold nanoparticles showed distinguishing peak at 520 nm indicated the formation of nanoparticles. Different functional groups were identified by using FT-IR spectroscopy. The XRD was utilized to find crystallographic planes of the face-centered cubic gold crystals. The average size of the synthesized gold nanoparticles obtained was calculated to be 38.57 nm. The synthesized nanoparticles were also subjected for their biological potential determination and significant antimicrobial activities were noted.

Keywords: VU spectroscopy, FTIR, SEM, antimicrobial, T. nummularia