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<p>Innovative electrospun films were developed utilizing ZnO/α-, β-, and ɣ-cyclodextrin-metal-organic frameworks (Zn@CD-MOFs) with varying molar ratios of CD to ZnO (1:1, 3:1, 5:1, and 7:1). The 5:1 molar ratio combined with ɣ-CD exhibited the highest loading efficiency (2.84 ± 0.020%) and was thus chosen for subsequent investigations. The synthesis of Zn@γ-CD-MOFs, along with their thermal stability, crystalline structure, and nanoscale crystal morphology, was validated through Fourier transform infrared (FTIR), thermal gravimetric analysis (TGA), X-ray Diffraction (XRD), and Field Emission Scanning Electron Microscope (FESEM) tests. The effective integration of Zn@γ-CD-MOFs nanostructures into the zein electrospun fiber matrix at concentrations of 5, 10, and 15% w/w was confirmed via FESEM imaging. The interactions between Zn@γ-CD-MOFs and zein-based electrospun matrices were clearly evidenced by FTIR and XRD. The electrospun films containing Zn@γ-CD-MOFs demonstrated the highest antimicrobial efficacy against <i>Saccharomyces cerevisiae</i>, <i>Escherichia coli</i>, and <i>Bacillus cereus</i>. The mechanical properties of the electrospun films were significantly improved with the inclusion of 10% w/w Zn@γ-CD-MOFs. The release kinetics of Zn<sup>2+</sup> ions was best described by the Korsmeyer-Peppas model, while the Fickian diffusion mechanism was identified as the primary mode of ion transport. The bioactive electrospun films containing 10% w/w Zn@γ-CD-MOFs hold promise for application as active packaging materials in direct contact with food, potentially extending their shelf-life.</p>

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Novel Nanocomposite Active Packaging Based on Electrospun Zein Nanofiber Films Loaded with ZnO/Cyclodextrin Metal-Organic Frameworks

  • 期刊论文

  • 发表日期：

    2025年10月9日

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  • Mahsa Moghaddasi-Mehrizi,
  • Toktam Mostaghim,
  • Alireza Rahman,
  • Lida Shahsavani

摘要

Innovative electrospun films were developed utilizing ZnO/α-, β-, and ɣ-cyclodextrin-metal-organic frameworks (Zn@CD-MOFs) with varying molar ratios of CD to ZnO (1:1, 3:1, 5:1, and 7:1). The 5:1 molar ratio combined with ɣ-CD exhibited the highest loading efficiency (2.84 ± 0.020%) and was thus chosen for subsequent investigations. The synthesis of Zn@γ-CD-MOFs, along with their thermal stability, crystalline structure, and nanoscale crystal morphology, was validated through Fourier transform infrared (FTIR), thermal gravimetric analysis (TGA), X-ray Diffraction (XRD), and Field Emission Scanning Electron Microscope (FESEM) tests. The effective integration of Zn@γ-CD-MOFs nanostructures into the zein electrospun fiber matrix at concentrations of 5, 10, and 15% w/w was confirmed via FESEM imaging. The interactions between Zn@γ-CD-MOFs and zein-based electrospun matrices were clearly evidenced by FTIR and XRD. The electrospun films containing Zn@γ-CD-MOFs demonstrated the highest antimicrobial efficacy against Saccharomyces cerevisiae, Escherichia coli, and Bacillus cereus. The mechanical properties of the electrospun films were significantly improved with the inclusion of 10% w/w Zn@γ-CD-MOFs. The release kinetics of Zn2+ ions was best described by the Korsmeyer-Peppas model, while the Fickian diffusion mechanism was identified as the primary mode of ion transport. The bioactive electrospun films containing 10% w/w Zn@γ-CD-MOFs hold promise for application as active packaging materials in direct contact with food, potentially extending their shelf-life.