Contact
    Start Publications Preparation and performance testing of corn ...
    ←  Publication Finder
    Attension

    Preparation and performance testing of corn starch/pullulan/gallic acid multicomponent composite films for active food packaging

    Year: 2023

    Journal: Food Chemistry: X, Volume 19, 2023-10-30, page 100782

    Authors: Zhang, Min; Yang, Bin; Yuan, Zimeng; Sheng, Qi; Jin, Changchun; Qi, Jun; Yu, Manman; Liu, Yingnan; Xiong, Guoyuan

    Keywords: Pullulan; Antioxidant; Bacteriostasis; Corn starch; Gallic acid

    The present study investigated the mechanical characteristics, hydrophobicity, antioxidant and antibacterial properties, FTIR, SEM and XRD of films fabricated with corn starch and pullulan (CS/PUL) by adding different concentrations of Gallic acid (GA) (0%, 0.5%, 1.0%, 1.5% w/v). The mechanical strength and opacity of CS/PUL films were enhanced by the addition of 1.0% GA. The water vapor permeability (WVP) of CS/PUL films was significantly lower in films with GA compared to those without (P < 0.05). The addition of GA, especially at concentrations of 1.0% and 1.5%, resulted in considerably better free radical scavenging activities on DPPH than films without GA (P < 0.05). Interestingly, the highest water contact angle (WCA) value was observed in films with 0.5% GA, indicating stronger hydrophobicity. Furthermore, the antibacterial capabilities of the films, particularly against E. coli and P. aeruginosa, improved with an increase in GA concentration. The results of FTIR, SEM and XRD analyses showed that GA was well distributed in the CS/PUL matrix.
    View publication