Acid content is another fruit-quality parameter. Reduction in total acidity is also typical during postharvest storage of fleshy
fruit, including mangos, and has been attributed to the use of organic acids as substrates for respiratory metabolism in harvested fruit (Valero and Serrano, 2010). Titratable acidity (TA) is an important index of fruit quality, and its value reflects the effects of storage. As shown in Fig. 2(d), the TA of all mangos gradually declined during storage with the decrease for CK being the fastest. The initial content for all groups was 2.2% from which it decreased until reaching a minimum on the final day of storage. By day 10, the content of CK had decreased to 0.12%, which was lower than the values for groups A and B of 0.37% and 0.49%, respectively. This indicates that the degradation rates of groups A and B were successfully reduced, which meant that the mangos retained a better flavor.