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<p>Edible and biodegradable films is new strategy to enhance food quality and sustainability. This study evaluated the mechanical properties, microstructure, and biodegradability of snakehead fish gelatin-based films compared to commercial gelatin, using glycerol or polyethylene glycol (PEG) as plasticizers. Snakehead gelatin was extracted from fish skin and scales, and tested at concentrations of 0.5–2.0&#xa0;g (%, w/v), with 2&#xa0;g (%, w/v) commercial gelatin as a control. Glycerol or PEG (10&#xa0;mL, %, v/v) was added as a plasticizer. Gelatin concentration influenced thickness, elongation at break (EAB), and tensile strength (TS) (<i>P</i> &lt; 0.05). Glycerol increased thickness and TS more effectively than PEG (<i>P</i> &lt; 0.05), though EAB differences were insignificant (<i>P</i> &gt; 0.05). Films with glycerol had rougher surfaces. All films degraded over 90% within 40 days using effective microorganisms (EM4). Snakehead gelatin and plasticizers significantly affected film properties. Both are highly biodegradable, making them promising biomaterials.</p>

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Mechanical and microstructure attributes of the biodegradable edible film fabricated of Channa striata gelatin as affected by plasticizer

  • 期刊论文

  • 发表日期：

    2026年2月4日

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  • Rosmawati Rosmawati,
  • Asjun Asjun,
  • Sri Fatmah Sari,
  • Asnani Asnani

摘要

Edible and biodegradable films is new strategy to enhance food quality and sustainability. This study evaluated the mechanical properties, microstructure, and biodegradability of snakehead fish gelatin-based films compared to commercial gelatin, using glycerol or polyethylene glycol (PEG) as plasticizers. Snakehead gelatin was extracted from fish skin and scales, and tested at concentrations of 0.5–2.0 g (%, w/v), with 2 g (%, w/v) commercial gelatin as a control. Glycerol or PEG (10 mL, %, v/v) was added as a plasticizer. Gelatin concentration influenced thickness, elongation at break (EAB), and tensile strength (TS) (P < 0.05). Glycerol increased thickness and TS more effectively than PEG (P < 0.05), though EAB differences were insignificant (P > 0.05). Films with glycerol had rougher surfaces. All films degraded over 90% within 40 days using effective microorganisms (EM4). Snakehead gelatin and plasticizers significantly affected film properties. Both are highly biodegradable, making them promising biomaterials.