CMC films containing RES and EUG.xlsx

The aim of present study was to compare the <i>in vitro</i> antioxidant and antibacterial properties of carboxymethyl cellulose (CMC) films containing resveratrol (RES) and eugenol (EUG), alone and in combination, and to calculate the interactions between them. At first, the total phenolic content of CMC films were evaluated. Then, their antioxidant and antibacterial effects of films were determined using DPPH, reducing power, disc diffusion and broth dilution methods. Finally, concentrations of RES and EUG which showed better results in the CMC films were added in combination forms to calculate their antioxidant and antibacterial interactions. The results showed that addition of RES and/or EUG to CMC films increased the total phenolic content, free radicals scavenging activity, reducing power and antibacterial activities of the films (<i>P</i>≤0.05). Gram-positive bacteria were more susceptible than Gram-negatives. In addition, the combined use of RES and EUG in CMC films had synergistic antioxidant and antagonistic antibacterial effects. The best results belonged to the film containing RES (8 µg/mL)+EUG (8 mg/mL) (<i>P</i>≤0.05). Considering the results of the present research, we can utilize CMC biodegradable film containing RES and EUG as a natural active packaging in food industry.