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<p>To obtain the&#xa0;fibrous membranes with the ability to effectively remove ethylene and extend the shelf life of agricultural produce,&#xa0;the electrospun membrane was developed by incorporating titanium dioxide nanoparticles (TiO<sub>2</sub>) into a polyvinyl alcohol (PVA) matrix. The impact of TiO<sub>2</sub> loading on the structural, mechanical, thermal, and functional properties of the membranes was systematically investigated. The results showed that TiO<sub>2</sub> was successfully integrated into the nanofibers. The incorporation of TiO<sub>2</sub> not only enhanced the tensile strength and thermal stability of the membrane but also endowed it with significant photocatalytic ethylene removal capability. The ethylene scavenging performance was found to be strongly dependent on the TiO<sub>2</sub> content, exhibiting a trend of first increasing and then decreasing. The PVA-6 membrane with a PVA/TiO<sub>2</sub> volume ratio of 6 achieved a peak ethylene removal efficiency of 20.83% over 72&#xa0;h, significantly outperforming the PVA membrane. When applied to banana preservation, the PVA-6 membrane effectively delayed the ripening process, as evidenced by the minimal changes in weight loss, firmness, color, and TSS compared to the PVA membrane. This work demonstrates a sustainable active packaging strategy with great potential for broad application in the postharvest preservation of climacteric fruits and vegetables.</p>

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Preparation of Electrospun Titanium Dioxide/Polyvinyl Alcohol Membranes and their Ethylene Scavenging Performance

  • 期刊论文

  • 发表日期：

    2026年7月2日

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  • Quan Wang,
  • Yihang Wu,
  • Tengfei Shi,
  • Xiuwen Huang,
  • Yiran Lu,
  • Boliang Li,
  • Zuju Shu

摘要

To obtain the fibrous membranes with the ability to effectively remove ethylene and extend the shelf life of agricultural produce, the electrospun membrane was developed by incorporating titanium dioxide nanoparticles (TiO2) into a polyvinyl alcohol (PVA) matrix. The impact of TiO2 loading on the structural, mechanical, thermal, and functional properties of the membranes was systematically investigated. The results showed that TiO2 was successfully integrated into the nanofibers. The incorporation of TiO2 not only enhanced the tensile strength and thermal stability of the membrane but also endowed it with significant photocatalytic ethylene removal capability. The ethylene scavenging performance was found to be strongly dependent on the TiO2 content, exhibiting a trend of first increasing and then decreasing. The PVA-6 membrane with a PVA/TiO2 volume ratio of 6 achieved a peak ethylene removal efficiency of 20.83% over 72 h, significantly outperforming the PVA membrane. When applied to banana preservation, the PVA-6 membrane effectively delayed the ripening process, as evidenced by the minimal changes in weight loss, firmness, color, and TSS compared to the PVA membrane. This work demonstrates a sustainable active packaging strategy with great potential for broad application in the postharvest preservation of climacteric fruits and vegetables.