Mixtures of starch, glycerol and water (2.5:1:46.5, in weight) were mixed to constitute the control film, named CNANI. For pre- paring the film containing natamycin and nisin (NANI), 300 g of slurry was prepared with the mixture previously stated, but 20 g of water was replaced by: i) 10 g of a solution of natamycin of adequate concentration for obtaining a final concentration of 0.027 g natamycin/100 g slurry (or 9.25 mg natamycin/dm2 of film) and ii) 10 g of a solution (pH 2) of nisin of adequate concentration for obtaining a final concentration of 0.0068 g nisin/100 g slurry (or 2.31 mg nisin/dm2 of film).