Storage quality of amylose‐lycopene complexes and the establishment of a shelf life prediction model

To study the changes in the storage quality of amylose‐lycopene complexes (ALCs), the color, antioxidant activity, lycopene content, and configuration changes of ALCs during different storage periods were analyzed. A shelf life prediction model was established to reveal the stability changes of the complexes. The results showed that the cis‐isomer percentage of lycopene in ALCs increased significantly from 11.82% to 13.76%. The lycopene isomers were in the order of 5‐Z > All‐E > 9‐Z > 13‐Z. Correlation analysis indicated that the content of lycopene was a key factor affecting the quality of ALCs. ALCs followed zero‐order and first‐order degradation kinetics at 5°C–25°C and 35°C–45°C, respectively. The degradation degree of lycopene was negatively correlated with temperature, with half‐lives and one‐tenth decay periods of 32.37 days and 6.48 days (5°C) significantly higher than 10.78 days and 1.63 days (45°C). The activation energy required for the reaction of ALCs was as high as 106.29 kJ/mol, indicating greater stability. On this basis, an ALCs shelf life prediction model was established, with a relative error of 0.06%–5.03% between the predicted and actual values. The results indicated that ALCs had good color, antioxidant activity, lycopene content, and configuration stability, and that higher temperatures had a greater impact on lycopene. The study provides theoretical reference for the quality safety of ALCs.