SUSTAINABLE SYNTHESIS OF GOLD NANOPARTICLES FROM FRUIT WASTE AND THEIR POTENTIAL AS ANTIBACTERIAL AND ANTIOXIDANTS

Abstract: In the present work, we employed an extracted solution of fruit waste (Punica granatum and Artocarpus heterophyllus) as an, environmentally friendly green synthesis method to synthesize gold nanoparticles with well-defined geometries at room temperature (30 °C) with distinctive structurally related optical properties. The phytochemicals present in the aqueous fruit extracts served as reducing agents along with the stabilization of nanoparticles. UV-visible spectroscopy measurement shows surface plasmon resonance in the visible region shows the formation of metal nanoparticles further in confirmation with Transmission Electron Microscopy (TEM) measurements and Dynamic Light Scattering (DLS) analysis used to examine the average size and shape of the particles. The Selected Electron Area Diffraction (SEAD) pattern indicated that the particles were crystalline with a face-centred cubic (fcc) structure. The stability of particles was determined through zeta potential. As-prepared nanoparticles were utilised further for antibacterial activity against E. coli and antioxidant activity in DPPH and ABTS.