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<p>To address the limitations of conventional packaging materials, this work synthesized the curcumin-loaded γ-cyclodextrin-metal-organic frameworks, Cur@CD-MOF, which was subsequently combined with the zein-chitosan (ZC) matrix to form the Cur@CD-MOF/ZC film. The structure, physiochemical property, curcumin release behavior, antibacterial/antioxidant activity and strawberry preservation performance of the Cur@CD-MOF/ZC film were investigated. Results confirmed that Cur@CD-MOF was successfully incorporated into the ZC matrix. The incorporation of Cur@CD-MOF made the Cur@CD-MOF/ZC films own smoother and denser microstructures, and have a lower water vapor permeability and light transmittance. The tensile strength of Cur@CD-MOF/ZC film (5.99 ± 0.55&#xa0;MPa) was significantly higher than that of ZC film (3.37 ± 0.15&#xa0;MPa). The release of curcumin from the Cur@CD-MOF/ZC film was delayed in humid environments, and interestingly, it became faster under acidic conditions compared to that under neutral conditions. Cur@CD-MOF significantly improved the antioxidant activity of Cur@CD-MOF/ZC film and its inhibitory effects against <i>Escherichia coli</i> and <i>Staphylococcus aureus</i>. Fruit preservation experiments showed that Cur@CD-MOF/ZC film effectively reduced the decay of strawberry. Moreover, Cur@CD-MOF/ZC film exhibited excellent preservation performances on other fruits and vegetables as well (winter jujube, broccoli, white mushroom, etc.), confirming their broad application potentials for the perishable produce preservation.</p>

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Use zein/chitosan active packaging films containing curcumin and γ-cyclodextrin metal-organic frameworks to preserve strawberry

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月29日

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  • Xinchen Gui,
  • Yaozhong Chen,
  • Shihai Cao,
  • Yadong Yu

摘要

To address the limitations of conventional packaging materials, this work synthesized the curcumin-loaded γ-cyclodextrin-metal-organic frameworks, Cur@CD-MOF, which was subsequently combined with the zein-chitosan (ZC) matrix to form the Cur@CD-MOF/ZC film. The structure, physiochemical property, curcumin release behavior, antibacterial/antioxidant activity and strawberry preservation performance of the Cur@CD-MOF/ZC film were investigated. Results confirmed that Cur@CD-MOF was successfully incorporated into the ZC matrix. The incorporation of Cur@CD-MOF made the Cur@CD-MOF/ZC films own smoother and denser microstructures, and have a lower water vapor permeability and light transmittance. The tensile strength of Cur@CD-MOF/ZC film (5.99 ± 0.55 MPa) was significantly higher than that of ZC film (3.37 ± 0.15 MPa). The release of curcumin from the Cur@CD-MOF/ZC film was delayed in humid environments, and interestingly, it became faster under acidic conditions compared to that under neutral conditions. Cur@CD-MOF significantly improved the antioxidant activity of Cur@CD-MOF/ZC film and its inhibitory effects against Escherichia coli and Staphylococcus aureus. Fruit preservation experiments showed that Cur@CD-MOF/ZC film effectively reduced the decay of strawberry. Moreover, Cur@CD-MOF/ZC film exhibited excellent preservation performances on other fruits and vegetables as well (winter jujube, broccoli, white mushroom, etc.), confirming their broad application potentials for the perishable produce preservation.