Antifungal activities of Cu and Cu 2 O nanoparticles against Colletotrichum spp.

In this work, the physical characterization and antifungal activities of Cu and Cu 2 O nanoparticles were investigated. The X-ray diffraction results confirmed that Cu and Cu 2 O nanoparticles were obtained with a crystalline nature. According to transmission electron microscope results, Cu nanoparticles were found to be quasi -rounded with a size of - 0.25 mu m, whereas Cu 2 O nanoparticles were quasi -faceted with a size of - 0.15 mu m. Furthermore, Cu and Cu 2 O nanoparticles exhibited very good results for inhibiting different Colletotrichum spp. at concentrations of 1 mg/mL under in vitro conditions. Based on scanning electron microscopy results, C. asianum treated with 0.50 mg/mL of Cu 2 O nanoparticles showed a morphological alteration.