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<p>Chitosan is a biodegradable polymer and is often used as a substitute for conventional petroleum-based packaging. However, it requires the incorporation of other components to achieve active properties with enhanced mechanical properties. In this study, chitosan (CS) is incorporated with thiolated chitosan (TCS) forming a semi-interpenetrating polymer network. <i>Tagetes minuta</i> essential oil (TMEO) is further embedded in this polymeric network to harness its antioxidant potential. The composite films of CS/TCS are prepared with different amounts of TMEO using the solvent casting method. These films are characterized via FTIR and FE-SEM, confirming the integration of TMEO into the films. The developed film (CS/TCS/TMEO-1) exhibits ≈93% enhancement in water vapor barrier properties and ≈84% increment in tensile strength as compared to CS/TCS film. The film also shows good antioxidant properties (≈88%), thus presenting its enormous potential as an active packaging material to reduce lipid oxidation and prolong the shelf-life of processed readymade food items.</p> Graphical Abstract <p></p>

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Disulfide crosslinked chitosan films embedded with Tagetes minuta essential oil for active food packaging

  • 期刊论文

  • 发表日期：

    2025年12月4日

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  • Deepika Gupta,
  • Dimpy Bhardwaj,
  • Shagun Shagun,
  • Ashutosh Sahoo,
  • Lagan Arya,
  • Ruchir Priyadarshi,
  • Shyam Kumar Masakapalli,
  • Garima Agrawal

摘要

Chitosan is a biodegradable polymer and is often used as a substitute for conventional petroleum-based packaging. However, it requires the incorporation of other components to achieve active properties with enhanced mechanical properties. In this study, chitosan (CS) is incorporated with thiolated chitosan (TCS) forming a semi-interpenetrating polymer network. Tagetes minuta essential oil (TMEO) is further embedded in this polymeric network to harness its antioxidant potential. The composite films of CS/TCS are prepared with different amounts of TMEO using the solvent casting method. These films are characterized via FTIR and FE-SEM, confirming the integration of TMEO into the films. The developed film (CS/TCS/TMEO-1) exhibits ≈93% enhancement in water vapor barrier properties and ≈84% increment in tensile strength as compared to CS/TCS film. The film also shows good antioxidant properties (≈88%), thus presenting its enormous potential as an active packaging material to reduce lipid oxidation and prolong the shelf-life of processed readymade food items.

Graphical Abstract