Antimicrobial properties of dextran-based coatings incorporated with silver nanoparticles

Abstract

Antimicrobial potential of a film made from dextran incorporated with silver nanoparticles (Ag NPs) against Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus was investigated. First, the colloidal Ag NPs solutions of three different concentrations: 0.5, 1.0 and 2.0 mmol L-1 were made. The next step was preparation of dextran/nanosilver films. Disc diffusion method on agar and quantitative test in liquid medium were performed to evaluate the antibacterial activity of prepared composites. The results obtained in this work demonstrated that dextran-based film incorporated with Ag NPs could be used as a coating to prevent contaminations of working surfaces.