Abstract
Nanotechnology is an emerging science in the world and attracted the interest of researchers due to their vast biological application. In this study, we Synthesized the gold nanoparticles (Au-NPs) using the stem extract of Euphorbia neriifolia L. The reduction of gold salt with the extract of E. neriifolia stem resulted in the formation of Au-NPs. The pathway is based on the reduction of AuCl4 by the extract of E. neriifolia stem. This method is simple, efficient, economic and nontoxic. Gold nanoparticles were characterized by UV-Vis spectroscopy, FT-IR Spectroscopy, X-ray Diffraction (XRD), Energy dispersive X-ray spectroscopy (EDX) and Scanning electron microscopy (SEM). The UV-Vis spectra gave surface plasmon resonance (SPR) at 520–570 for gold nanoparticles. FT-IR spectrum indicated the presence of different functional groups present in the biomolecules capping the nanoparticles. XRD showed face-centered cubic structure of gold nanocrystals with an average size of 22[Formula: see text]nm. Gold nanoparticles were mostly spherical in shape and 23–25[Formula: see text]nm in size, confirmed through SEM. Further, the synthesized Au-NPs were examined for their antibacterial and antifungal activity which showed better antibacterial and antifungal potential compared to the stem extract.
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