3.4.1. Appearance and Opacity Analysis Results

The intuitive packaging color appearance can easily affect the application efficacy of an indicator film. As presented in Table 2, there were no obvious differences in the L\* values of A-CBAL films with different lecithin ratios but they exhibited slightly higher values than the A-CBA film, indicating that liposome films have higher brightness. The decreased negative a\* and b\* values reflect the lower greenness and blueness strengths of the films with liposomes, which could be attributed to the yellowish color of the liposomes. Therefore, the blue of anthocyanin was covered after being encapsulated by liposomes, increasing the opacity.
