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CMC-based functional film incorporated with copper-doped TiO2 to prevent banana browning

Ezati, P ; Sharif University of Technology | 2022

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  1. Type of Document: Article
  2. DOI: 10.1016/j.foodhyd.2021.107104
  3. Publisher: Elsevier B.V , 2022
  4. Abstract:
  5. Titanium dioxide (TiO2) and Cu-doped TiO2 (Cu–TiO2) were synthesized using a sol-gel method and used as nanofillers to prepare CMC-based functional packaging films. The Cu–TiO2 was spherical particles with a size range of 66.1 ± 9.0 nm TiO2 and Cu–TiO2 nanoparticles had good compatibility with CMC and were evenly distributed in the CMC polymer matrix to form a composite film. The TiO2-added film did not show significant antibacterial activity, but the Cu–TiO2-added film exhibited high antibacterial activity against foodborne pathogenic bacteria (L. monocytogenes and E. coli) under visible light. When bananas were packaged with the CMC-based films, the CMC/Cu–TiO2 film effectively delayed the banana's browning. With strong antibacterial and ethylene scavenging capabilities under visible light, the CMC/Cu–TiO2 film has a high potential for active food packaging applications, especially in extending the shelf life of fruit. © 2021 Elsevier Ltd
  6. Keywords:
  7. Banana ; CMC ; Cu-doped TiO2 ; Photocatalytic activity ; Shelf life extension ; TiO2
  8. Source: Food Hydrocolloids ; Volume 122 , 2022 ; 0268005X (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0268005X21005208