BIOSYNTHESIS OF GOLD NANOPARTICLES FROM FUNGI

Abstract

All selected five fungi Colletotrichum fulcatum, Trichoderma atroviride, Aspergillus paraciticus. Aspergillus carbonarius and Penicillium citrinum are used for the biosynthesis of gold nanoparticles fresh cell-free filtrate was used for the synthesis of gold nanoparticles. chloroauric acid was the reductant agent mixed with cell-free filtrate of fungi. During the visible analysis, Aspergillus paraciticus biomass was changed from pale yellow to purple color, in Aspergillus carbonarius biomass was changed from black color to Purple and Penicillium citrinum pale brown color to brown color and UV-Visible spectroscopic analysis. In UV-visible spectrum, no peak formation was observed in cell-free extract Colletotrichum fulcatum, Trichoderma atroviride, Aspergillus paraciticus, Aspergillus carbonarius, and Penicillium citrinum before immersion of HAuCl4 in series 3 and 4, while as strong surface plasmon resonance (SPR) peak of the cell-free extract with HAuCl4 was observed at 450 and 550 nm.