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<p>In this study, electrospun zein/pullulan core–shell nanofibers were generated from bilayer emulsions stabilized by sodium caseinate (SC). The SC emulsifier transformed the emulsions into visco-elastic networks whose apparent viscosity and elastic modulus scaled directly with SC content; this rheological reinforcement translated into continuous fibers with tunable diameters. The nanofibers produced from emulsions containing SC exhibited superior wet, thermal, and mechanical stability. Furthermore, the core–shell nanofibers mediated a sustained release of flaxseed oil: SC incorporation lowered the 2&#xa0;h free fatty acid release rates from 60.64% to 34.99%. This study establishes a simple, scalable route to engineer zein-based core–shell carriers for hydrophobic bioactives through emulsion electrospinning.</p>

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Electrospun Core–Shell Nanofibers Based on Interfacial Modification by Sodium Caseinate of Zein/Pullulan Bilayer Emulsion

  • 期刊论文

  • 发表日期：

    2026年3月19日

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  • Yang Li,
  • Sumeng Wei,
  • Junjie Weng,
  • Meiyu Chen,
  • Yucheng Zou,
  • Hui Zhang

摘要

In this study, electrospun zein/pullulan core–shell nanofibers were generated from bilayer emulsions stabilized by sodium caseinate (SC). The SC emulsifier transformed the emulsions into visco-elastic networks whose apparent viscosity and elastic modulus scaled directly with SC content; this rheological reinforcement translated into continuous fibers with tunable diameters. The nanofibers produced from emulsions containing SC exhibited superior wet, thermal, and mechanical stability. Furthermore, the core–shell nanofibers mediated a sustained release of flaxseed oil: SC incorporation lowered the 2 h free fatty acid release rates from 60.64% to 34.99%. This study establishes a simple, scalable route to engineer zein-based core–shell carriers for hydrophobic bioactives through emulsion electrospinning.