1 research outputs found
Porphyrinic Metal–Organic Framework-Loaded Polycaprolactone Composite Films with a High Photodynamic Antibacterial Activity for the Preservation of Fresh-Cut Apples
Food-borne diseases caused by fresh
fruits and vegetables seriously
threaten human health. The polycaprolactone (PCL) polymer with good
biodegradability has drawn growing interest in packaging and protecting
of fresh fruits and vegetables. The disadvantage of pure PCL as a
packaging material is the lack of the antibacterial function. Photodynamic
sterilization as a safe and effective antibacterial method is now
the emerging means for food safety. Therefore, the porphyrinic metal–organic
framework MOF-545 as a highly effective photosensitizer was incorporated
with PCL to prepare a biodegradable antibacterial composite film.
The incorporation of MOF-545 nanorods significantly enhanced the hydrophilicity
and mechanical strength of the film while slightly decreasing the
transparency. The PCL/MOF-545 (10%) film exhibited the strongest antibacterial
activity under a white LED light. This film was used for packaging
fresh-cut apples and effectively killed 96% of the microorganisms,
also delaying the apples’ discoloration and water loss. The
PCL/MOF-545 film showed great potential for the antibacterial packaging
of fruits and vegetables