3.4.3. Mechanical Properties

Excellent TS and EB values can improve the protection performance of food packaging materials during food transportation periods. Each of the A-CBAL films had a significantly higher TS value and a lower EB value than the A-CBA film. This was probably attributed to the stronger intramolecular chemical bonding force and intermolecular force (van der Waals force and hydrogen bond) between liposomes and the film-forming materials than free anthocyanins [29]. The A-CBAL2 film simulated the maximum TS value with a value of 12.42 MPa, and that of the A-CBAL3 film gradually decreased to 5.81 MPa due to liposome

instability. However, there were no significant differences in the EB values of the three A-CBAL films, that is, the change in the lecithin ratio did not destroy the crystal structure of the film-forming matrix.
