The Molecular and Industrial Biotechnology Group (GBMI) of the Universitat Politècnica de Catalunya (BarcelonaTech UPC) has improved the antimicrobial properties of medical textiles using an enzymatic pre-treatment combined with simultaneous deposition of nanoparticles and bio-polymers under ultrasonic irradiation.
The technique is used to create completely sterile antimicrobial textiles that help prevent hospital-acquired infections (HAIs). The research was carried out within the framework of the European SONO project, which received €12m in funding and involves the participation of 17 partners.
The team of researchers based at the UPC’s Terrassa Campus and led by Tzanko Tzanov used enzymes that improve adhesion of the antimicrobial nanoparticles to the fabric under ultrasonic irradiation. By applying these enzymes, the researchers increased the durability of the nanoparticles on the fabric to such a degree that they remain present even after 70 laundry cycles.
The research conducted by the GBMI paves the way for the production of textiles with antimicrobial properties that are fully effective. The effectiveness of the antimicrobial treatment has also been boosted by incorporating in the fabric hybrid materials that combine organic and inorganic components (zinc and chitosan nanoparticles). In addition to eliminating any bacteria present, these materials prevent the growth of new microbes.
Two prototype machines based on the results generated by the SONO project are now being used to manufacture hospital gowns and linen. One is installed at the facilities of the Italian company Klopman International, the other at the Romanian firm Davo Clothing. The fabrics produced are currently being tested at a hospital in Sofia (Bulgaria), and the results obtained have been positive.
