The fresh-cut fruit would continue its respiration due to metabolism.The respiration rate of a mango is an important index that reflects the breakdown of complex organic components. The organic nutrients accumulated in mangos are consumed in the respiration process, leading to decreased fruit quality. Fig. 2(a) shows that the respiration rate of all groups increased significantly during the prophase of storage. However, CK reached its peak rate on day 5 at 25.58 mgCO2 kg1 h1, then began to decline. In contrast, respiration rates of groups A and B stayed lower level with no obvious respiration peaks appeared after day 7. The results showed that the respiration intensity of mangos in groups A and B was decreased, indicating delayed maturation. Similar result has been recorded in previous studies of other researchers, the
strawberry respiration rate decreased after coating the chitosan (Perdonesa et al., 2012). This seems to suggest that the coating could decrease the gas permeability at the fruit surface, thus disturbing the gas exchange during fruit respiration. The coatings also affect the metabolism of mango, thus altering the respiration pattern (Perdonesa et al., 2012). Furthermore, the respiration changes between the experimental groups and the control were significant during the observed storage period. It’s possible that bentonite absorbed CO2 due to its small kinetic diameter of 0.00028 lm compared to the large bentonite interlayer size of around 1.14 lm.