Extracellular Biosynthesis of Copper and Copper Oxide Nanoparticles by Stereum hirsutum, a Native White-Rot Fungus from Chilean Forests

Figure 1

Biosynthesis of copper and copper oxide nanoparticles mediated by the mycelium-free extract of S. hirsutum over a 5-day reaction period at pH 9.0 in the presence of CuCl₂ (5 mM). Kinetics of the absorbance on resonance plasmon absorption (SPR) based on the UV-visible spectrum of copper or copper oxide nanoparticles.