“…This activity could be exerted either by direct contact food surfaces using antimicrobial non migratory or controlled diffusion systems or by indirect contact using volatiles antimicrobial releasing systems. Many preservatives, such as bacteriocins, organics acids, various plant extracts, volatiles from essential oils, silver-substituted zeolite, have been incorporated in packaging materials to provide antimicrobial activity (Appendini & Hotchkiss, 2002;Coma, Sebti, Pardon, Deschamps, & Pichavant, 2001;Dawson, Harmon, Sotthibandhu, & Han, 2005;Hoffmann, Han, & Dawson, 2001;Lee, Park, & Lee, 2004;Pranoto, Rakshit, & Salokhe, 2005;Quintavalla & Vicini, 2002). Moreover, active films containing essential oils as antimicrobial agents have been already combined with several preservation techniques such as low dose c-irradiation to enhance shelf life of food stuff (Ouattara, Simard, Piette, Begin, & Holley, 2000).…”