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<p>A new bilayer structure containing the zein-cumin essential oil (CEO) electrospinning nanofibers was developed on the surface of the PPI-SG composite layer, and multilayer films containing various thicknesses of the zein-CEO electrospinning layer (0, 15, 30, 45, 60&#xa0;g.m<sup>− 2</sup>) were prepared. The properties of the multilayer films, including appearance, biodegradability, kinetic release, and physical, structural, barrier, mechanical, thermal, and chemical properties, were investigated. Adding the thickness of the zein-CEO electrospinning nanofibers significantly increased the tensile strength, elastic modulus, film thickness, barrier properties against water and oxygen, and antimicrobial and antioxidant characteristics (<i>p</i> &lt; 0.05). The multilayer structure containing the highest thickness of the nanofibers (60&#xa0;g/m²) exhibited a threefold reduction in light transmission compared to the control film. Furthermore, moisture content, water solubility, and swelling were estimated at 69.23%, 53.68%, and 55.07%, respectively. Increasing the thickness of the electrospun layer enhanced the surface hydrophobicity. The FESEM images demonstrated that films containing higher thickness of nanofibers had an even and compact structure. The interaction between zein, CEO, sage seed gum, and pea protein isolated was confirmed by the FTIR results. The XRD and DSC results showed a rise in crystallinity degree and thermal stability in films with high thickness of nanofibers, respectively. The CEO release profile exhibited that this active multilayer structure had a controlled release in an aqueous medium. All findings represent that these biodegradable films could have potential applications in medicine, drug delivery, and the food industry.</p>

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Electrospun zein nanofiber-reinforced multilayer biodegradable films with cumin essential oil

  • 期刊论文

  • 发表日期：

    2025年7月9日

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  • Donya Ayazi,
  • Mohsen Zandi,
  • Ali Ganjloo,
  • Nazila Dardmeh

摘要

A new bilayer structure containing the zein-cumin essential oil (CEO) electrospinning nanofibers was developed on the surface of the PPI-SG composite layer, and multilayer films containing various thicknesses of the zein-CEO electrospinning layer (0, 15, 30, 45, 60 g.m− 2) were prepared. The properties of the multilayer films, including appearance, biodegradability, kinetic release, and physical, structural, barrier, mechanical, thermal, and chemical properties, were investigated. Adding the thickness of the zein-CEO electrospinning nanofibers significantly increased the tensile strength, elastic modulus, film thickness, barrier properties against water and oxygen, and antimicrobial and antioxidant characteristics (p < 0.05). The multilayer structure containing the highest thickness of the nanofibers (60 g/m²) exhibited a threefold reduction in light transmission compared to the control film. Furthermore, moisture content, water solubility, and swelling were estimated at 69.23%, 53.68%, and 55.07%, respectively. Increasing the thickness of the electrospun layer enhanced the surface hydrophobicity. The FESEM images demonstrated that films containing higher thickness of nanofibers had an even and compact structure. The interaction between zein, CEO, sage seed gum, and pea protein isolated was confirmed by the FTIR results. The XRD and DSC results showed a rise in crystallinity degree and thermal stability in films with high thickness of nanofibers, respectively. The CEO release profile exhibited that this active multilayer structure had a controlled release in an aqueous medium. All findings represent that these biodegradable films could have potential applications in medicine, drug delivery, and the food industry.