Ovalbumin amyloid fiber-based antibacterial edible film for Agaricus bisporus preservation

In this study, an edible film with antibacterial and barrier properties was prepared by incorporating bioactive glass (BG) into the network structure constructed by ovalbumin amyloid fiber (OVAF) and carboxymethyl cellulose (CMC). OVAF with a high aspect ratio was assembled through phase transition of OVA. Compared with OVA (1.0%), the opacity and thickness of OVAF (1.0%) film increased by 0.87% and 0.01 mm, the tensile strength (TS) and elongation at break (Eb) increased by 3.15 MPa and 17.71%, the water absorption (WA) and solubility (WS) decreased by approximately 30%, and the oxygen and water vapor permeability decreased to 5.94 g·m −2 ·d −1 and 2.58 g·mm·m −2 ·h −1 ·kPa −1 , indicating that OVAF endows the film with barrier properties. BG endows the film with antibacterial properties. The inhibition rate of OVAF/CMC/BG (0.5%) film was approximately 100%. This film can slow weight loss, and delays browning and senescence of Agaricus bisporus.