Bebida deportiva isotónica a base de jugo de piña: Estabilidad durante su almacenamiento acelerado

Abstract

It was evaluated the behavior, during accelerated storage, of the quality indicators of an isotonic sport drink made from the mixture of pineapple juice, distilled water, sucrose and NaCl. The drink was packed in amber glass bottles was pasteurized at 80 °C for 5 min in a water bath. The drink was stored at 45, 50 and 55 °C with the aim of achieving accelerated deterioration. The drink presented a total sugar content of 7.6%, osmolality of 328 mOsm/kg and sensory acceptance corresponding to the category -I like it slightly-. At the end of storage at each temperature, there was a decrease in brightness and an increase in the values of a* and b*, related to the increase (p ≤ 0.05) of the browning index (IP) and the moment of sensory rejection, due to a notable loss of pineapple color. The behaviors of the IP at each temperature were adjusted to polynomial models of order five with high coefficients of determination (> 0.98). This study provides useful information for the optimization of beverage production, quality control and spoilage prediction, which could contribute to the development of new products and satisfy consumer needs.