Antibacterial Activities of Propolis-Sprayed Packaging Films

Abstract

In this study, the adhesion properties and antibacterial activity of propolis extracts produced by using different solvents were determined. Wax-oil, oil, glycerol, film solution, ethanol, ethyl acetate and propylene glycol were used as solvents. Propolis and antibacterial solutions prepared at certain concentrations were integrated into low density polyethylene (LDPE) films by a spraying method. It was determined that the oil containing solutions did not adhere on a film surface. By comparing propolis solutions with different antibacterial solutions, it was found that the most suitable liquid that can be integrated onto the LDPE film in desired criteria was propolis solution with ethyl acetate. The antibacterial effects of films were determined by the ISO 22196: 2011 method on propolis-sprayed LDPE films, and it was observed that bacterial count was reduced by 7 cfu/g after 24 hour. © 2021 by the Author(s).