Ustilago maydis (UM) is a fungus that grows naturally on Zea mays; it reduces the corn yields, and thus, represents huge economic loss; however, can be used as an exotic food, in present work, successfully reducing stabilizing agent for preparation of silver nanoparticles (Ag NPs) due to its content amino acids biosurfactants. The effects concentration UM aqueous extract, pH, sunlight particle ...