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<p>Polysaccharide-based polymeric films have gained prominence as sustainable systems for functional applications, especially when incorporated with bioactive compounds such as eugenol. In this study, alginate, carrageenan, and chitosan films with different concentrations of eugenol were developed to evaluate the effects on their physicochemical, structural, and functional properties. The films were characterized for thickness, solubility, mechanical properties, water vapor permeability, contact angle, as well as FTIR, X-ray, TGA, and SEM analyses. The results showed that the incorporation of eugenol increased film thickness, particularly in formulations alginato 50% (ALG-50) (0.103&#xa0;mm) and carrageena 50% (CAR-50) (0.107&#xa0;mm). Solubility was complete in alginate and carrageenan films, while chitosan films exhibited greater water resistance. Chitosan (CS) provided higher mechanical strength in Chitosan 35% (CS-35) (64.75&#xa0;MPa), whereas alginate and carrageenan offered greater elongation. Permeability and contact angle were influenced by both the type of polysaccharide and the eugenol load, with chitosan films showing greater hydrophobicity. Structural analyses revealed specific chemical interactions between eugenol and each polymer matrix, affecting crystallinity and thermal stability. Film morphology varied according to formulation, highlighting the influence of eugenol on surface compactness and uniformity. It is concluded that film property modulation strongly depends on the type of polysaccharide and eugenol concentration, indicating their potential for use in active systems such as functional packaging and controlled release of bioactive compounds.</p>

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Influence of Eugenol Loading on Physicochemical Properties and Antimicrobial Activity of Alginate, Carrageenan, and Chitosan Films

  • 期刊论文

  • 发表日期：

    2025年12月11日

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  • Eddyn Gabriel Solorzano Chavez,
  • Jaiber Humberto Rodriguez Llanos,
  • Luiz Scaliante Bezerra,
  • Ana Gabriela Oliveira Ferreira Janas,
  • Melissa Machado Martins,
  • Henrique Ferreira,
  • Michel Brienzo

摘要

Polysaccharide-based polymeric films have gained prominence as sustainable systems for functional applications, especially when incorporated with bioactive compounds such as eugenol. In this study, alginate, carrageenan, and chitosan films with different concentrations of eugenol were developed to evaluate the effects on their physicochemical, structural, and functional properties. The films were characterized for thickness, solubility, mechanical properties, water vapor permeability, contact angle, as well as FTIR, X-ray, TGA, and SEM analyses. The results showed that the incorporation of eugenol increased film thickness, particularly in formulations alginato 50% (ALG-50) (0.103 mm) and carrageena 50% (CAR-50) (0.107 mm). Solubility was complete in alginate and carrageenan films, while chitosan films exhibited greater water resistance. Chitosan (CS) provided higher mechanical strength in Chitosan 35% (CS-35) (64.75 MPa), whereas alginate and carrageenan offered greater elongation. Permeability and contact angle were influenced by both the type of polysaccharide and the eugenol load, with chitosan films showing greater hydrophobicity. Structural analyses revealed specific chemical interactions between eugenol and each polymer matrix, affecting crystallinity and thermal stability. Film morphology varied according to formulation, highlighting the influence of eugenol on surface compactness and uniformity. It is concluded that film property modulation strongly depends on the type of polysaccharide and eugenol concentration, indicating their potential for use in active systems such as functional packaging and controlled release of bioactive compounds.