New antimicrobial surfaces based on silica mesoporous nanoparticles functionalized with bioactive compounds

These coatings based on silica nanoparticles (SMINs) are modified with copper andcarvacrol, an essential oil. The copper ions released from the nanoparticles damagebacteria and viruses by disrupting their cellular structures, while carvacrol enhances thiseffect by breaking down membranes and DNA. Laboratory tests demonstrated thatthese nanocoatings are highly effective: they can eliminate 100% of bacteria such as E.coli and S. aureus within just 5 minutes. Additionally, they significantly reducethepresence of SARS-CoV-2, with over 70% reduction observed after one hour ofcontact. However, theireffectiveness against non-enveloped viruses like MS2 is more limited. Overall, thisinnovative approach offers a promising, eco-friendly solution for creating antimicrobialand antiviral surfaces, contributing to improved hygiene and safety in various settings.