Antimicrobial activity

Products that were coated with a "Titanium Dioxide (TiO2) and Silver (Ag) nano-particle compound deactivate enzymes and proteins of bacteria that are contaminating and surviving on the surface of the product claiming antimicrobial activity. Similarly incorporation of nanosilver leads to antimicrobial activity. For example nanosilver is used in washing machines supposedly floods wash water with antimicrobial silver ions, creating super cleaning of dirty cloths but also potentially threatening biological functioning when the excess silver flows into wastewater treatment plants.As of February 28, 2008, the Project on Emerging Nanotechnologies had 143 manufacturer-identified products claming to use nanoscale silver in its Consumer Products Inventory.