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<p>Sea urchin spines represents a naturally abundant marine biomass that can be valorized as a sustainable bioactive fillers for environmentally friendly packaging materials. Chitosan/gelatin (CG) blend films containing sea urchin spine powder (SUSP) in soluble form at various levels (0–5%, <i>w</i>/<i>w</i>) were prepared by the solvent casting method and investigated for their properties. All films added with SUSP had smooth surface, while some cracks were found in cross-section of CG<sup>5%</sup> film. Thickness of the films was increased from 30.20 to 34.27&#xa0;μm, when 5% of SUSP was incorporated (<i>P</i> &lt; 0.05). Young's modulus (YM) and tensile strength (TS) of CG<sup>0%</sup> film were enhanced to 1110.01 and 23.69&#xa0;MPa, respectively, when 3% SUSP was incorporated, whereas elongation at break (EAB) decreased (5.36%) (<i>P</i> &lt; 0.05). Water vapor permeability (WVP) of CG<sup>3%</sup> film was found lowest, representing the enhanced water vapor barrier property. Moreover, yellowness (<i>b</i>* value) of film was augmented to 2.43 as the level of 5% SUSP increased. Increasing levels of SUSP resulted in progressive enhancement of UV-blocking and antioxidant activities of the films. Among all films, CG<sup>5%</sup> film exhibited superior inhibitory activity against the selected fungi including <i>Aspergillus flavus</i> and <i>Aspergillus parasiticus</i>, particularly at high concentration. Thus, active CG films containing SUSP could serve as sustainable food packaging materials, offering a biodegradable alternative to conventional plastics while promoting the valorization of sea urchin waste into value-added functional products.</p>

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Enhancement of Barrier, Antioxidant and Antifungal Properties of Chitosan/Gelatin Blend Films Added with Sea Urchin Spine Powder

  • 期刊论文

  • 发表日期：

    2026年6月18日

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  • Vaisshali Prakash Arul Prakasam,
  • Gokulprasanth Murugan,
  • Jeya Shakila Robinson,
  • Bin Zhang,
  • Soottawat Benjakul

摘要

Sea urchin spines represents a naturally abundant marine biomass that can be valorized as a sustainable bioactive fillers for environmentally friendly packaging materials. Chitosan/gelatin (CG) blend films containing sea urchin spine powder (SUSP) in soluble form at various levels (0–5%, w/w) were prepared by the solvent casting method and investigated for their properties. All films added with SUSP had smooth surface, while some cracks were found in cross-section of CG5% film. Thickness of the films was increased from 30.20 to 34.27 μm, when 5% of SUSP was incorporated (P < 0.05). Young's modulus (YM) and tensile strength (TS) of CG0% film were enhanced to 1110.01 and 23.69 MPa, respectively, when 3% SUSP was incorporated, whereas elongation at break (EAB) decreased (5.36%) (P < 0.05). Water vapor permeability (WVP) of CG3% film was found lowest, representing the enhanced water vapor barrier property. Moreover, yellowness (b* value) of film was augmented to 2.43 as the level of 5% SUSP increased. Increasing levels of SUSP resulted in progressive enhancement of UV-blocking and antioxidant activities of the films. Among all films, CG5% film exhibited superior inhibitory activity against the selected fungi including Aspergillus flavus and Aspergillus parasiticus, particularly at high concentration. Thus, active CG films containing SUSP could serve as sustainable food packaging materials, offering a biodegradable alternative to conventional plastics while promoting the valorization of sea urchin waste into value-added functional products.