Neither PP-HO nor PP-LO packaging conditions were effective in reducing microbial counts, although, the shelf-life of pineapple pieces was extended above 11 d refrigerated storage. Santos et al. (2005) did not find significant differences (p < 0.05) among fresh-cut ‘Perola’ pineapple stored under passive modified atmosphere, and under low oxygen (5 and 2%) and high carbon dioxide concentration (5 and 10%) and stored at 5 ◦C for 10 d. Alginate coating, did not improve fresh-cut pineapple resistance to microbial growth, as it was previously reported by Rojas-Graü et al. (2007b) for ‘Fuji’ apples using alginate and gellan coatings. These different behaviors could be attributed to the morphological characteristic of the fruit. Soliva-Fortuny and Martín-Belloso (2003) reported that physicochemical attributes of the fruit have an important effect on
microbiological shelf-life of fresh-cut fruit.r