Development of Coated PLA Films Containing a Commercial Olive Leaf Extract for the Food Packaging Sector.

A commercial olive leaf extract (OL), effective against , , , and , was added to three different coating formulations (methylcellulose, MC; chitosan, CT; and alginate, ALG) to produce active polylactic acid (PLA) coated films. Evaluation of these coated PLA films revealed significant inhibition of growth, particularly with the MC and CT formulations exhibiting the highest inhibition rates (99.7%).