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<p>This work reports the development of eco-friendly packaging packaging films using chitosan, marine-derived gelatin, flaxseed protein isolate (FPI), and flaxseed oil (FO). Aimed at enhancing food packaging performance while reducing environmental impact, four formulations were designed, including a control and three variants enriched with increasing levels of chitosan. All films incorporated consistent amounts of gelatin, FPI, and FO. The chitosan addition improved tensile strength and significantly reduced water vapor permeability, thereby enhancing overall barrier performance. However, elongation at break declined slightly with higher chitosan content. Wettability analysis showed increased surface hydrophobicity in films incorporating chitosan, which also demonstrated improved structural stability during storage. Spectral (FTIR) and microstructural (SEM) examinations showed stronger molecular interactions and more uniform emulsions. Antioxidant activities increased with chitosan content. These findings highlight the potential of gelatin–FPI–FO films incorporating chitosan as multifunctional, biodegradable packaging materials aligned with sustainable food systems and environmental protection goals.</p>

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Eco-friendly packaging: chitosan–gelatin films co-incorporating flaxseed protein and oil with improved multifunctional properties

  • 期刊论文

  • 发表日期：

    2025年12月16日

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  • Rim Ben Malek,
  • Nahed Fakhfakh,
  • Ola Abdelhedi,
  • Nacim Zouari,
  • Corinne Nardin,
  • Mourad Jridi

摘要

This work reports the development of eco-friendly packaging packaging films using chitosan, marine-derived gelatin, flaxseed protein isolate (FPI), and flaxseed oil (FO). Aimed at enhancing food packaging performance while reducing environmental impact, four formulations were designed, including a control and three variants enriched with increasing levels of chitosan. All films incorporated consistent amounts of gelatin, FPI, and FO. The chitosan addition improved tensile strength and significantly reduced water vapor permeability, thereby enhancing overall barrier performance. However, elongation at break declined slightly with higher chitosan content. Wettability analysis showed increased surface hydrophobicity in films incorporating chitosan, which also demonstrated improved structural stability during storage. Spectral (FTIR) and microstructural (SEM) examinations showed stronger molecular interactions and more uniform emulsions. Antioxidant activities increased with chitosan content. These findings highlight the potential of gelatin–FPI–FO films incorporating chitosan as multifunctional, biodegradable packaging materials aligned with sustainable food systems and environmental protection goals.