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MIL-100(Fe)-Based Composite Films for Food Packaging.

Alexandra M Pak1,2, Elena A Maiorova1,2, Elizaveta D Siaglova1,2

  • 1Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Str. 28, 119991 Moscow, Russia.

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Researchers developed active food packaging using metal-organic frameworks loaded with tea tree oil. These composite films offer UV protection and antibacterial properties, enhancing food safety and shelf life.

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active food packagingbiocompatible metal–organic frameworkscomposite materialshydrocolloids

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Area of Science:

  • Materials Science
  • Food Science
  • Biotechnology

Background:

  • Active packaging enhances food safety and extends shelf life by incorporating functional ingredients.
  • Metal-organic frameworks (MOFs) offer a versatile platform for encapsulating and delivering active compounds.
  • Tea tree essential oil possesses known antimicrobial and antioxidant properties.

Purpose of the Study:

  • To create novel composite films for active food packaging.
  • To investigate the incorporation of MIL-100(Fe) loaded with tea tree oil into κ-carrageenan and hydroxypropyl methylcellulose films.
  • To evaluate the functional properties of the developed composite films, including UV-blocking, water vapor permeability, and antibacterial activity.

Main Methods:

  • Synthesis of MIL-100(Fe) metal-organic framework.
  • Loading of tea tree essential oil into MIL-100(Fe).
  • Fabrication of κ-carrageenan and hydroxypropyl methylcellulose composite films incorporating the loaded MIL-100(Fe).
  • Characterization of composite films for UV-blocking, water vapor permeability, and antibacterial efficacy against Gram-negative and Gram-positive bacteria.

Main Results:

  • Uniform distribution of MIL-100(Fe) particles within the composite films was achieved.
  • The composite films exhibited excellent UV-blocking capabilities.
  • Good water vapor permeability was observed, crucial for maintaining food quality.
  • Modest but significant antibacterial activity was demonstrated against both Gram-negative and Gram-positive bacteria.

Conclusions:

  • Metal-organic frameworks are effective carriers for hydrophobic natural compounds like tea tree oil.
  • The developed composite films show promise as active packaging materials for food products.
  • This approach offers a sustainable method for enhancing food safety and extending shelf life using naturally derived components.