Kechichian et al. (2010) evaluated the number of viable colonies of molds and yeasts in the pan bread slices stored without and with the presence of biodegradable films with addition of natural antimicrobial ingredients: cinnamon powder and clove powder, in different amounts. After seven days of storage, the colonies visually present on the pan bread slices surface increase considerably. In general, the counts obtained for the samples of pan bread stored with a biodegradable film were similar than stored without film, which indicate that the antimicrobial effect was not observed.