Scholarlink

<p>Petrochemical-based food packaging materials such as polythene and plastic are non-biodegradable and may release harmful substances to the packed food and the environment. Hence, the demand for healthy and safe food wrapping options is increasing. In addition, more than 50% of a fish is discarded as waste during commercial processing. This study developed a food packaging film using chitosan extracted from giant freshwater prawn (<i>Macrobrachium rosenbergii</i>) shell waste and collagen extracted from yellowfin tuna (<i>Thunnus albacares</i>) skin waste using a protocol modified in this study. Six types of films were developed by dissolving chitosan and collagen in acetic acid under three different ratios of chitosan: collagen by weight (100: 0, 75: 25, 50: 50) at two different pH levels (pH&#xa0;1, pH&#xa0;3). Prepared films were characterised as food packaging films using physical properties: film thickness; grammage; density; colour; optical property; moisture content; swelling; water vapour permeability; solubility; tensile strength; and chemical properties: antioxidant activity. Further, thermal properties: degradability in hot water; degradability in microwave oven; and thermo-gravimetric properties were measured. Moreover, biodegradability of these films was tested in soil. The crystallinity was analysed using XRD spectroscopy. Films prepared at 75: 25 (chitosan: collagen) by weight at pH&#xa0;3 showed optimal properties. The modified method reduces processing time from 40&#xa0;h to 20&#xa0;min, lowers electricity cost, and eliminates chemical usage such as glycerol. The developed film is transparent and thin, having transparency and antioxidant properties, thermally-stable up to 300&#xa0;°C and biodegradable in soil in less than 15&#xa0;days. This offers a more demanding and greener solution to replace petrochemical-based food packaging materials.</p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Development and Characterisation of an Edible-Biodegradable Food Packaging Film from Chitosan and Collagen Extracted from Fish Processing Waste

  • 期刊论文

  • 发表日期：

    2026年1月9日

查看全文
  • S. T. Gonapinuwala,
  • K. G. Y. Ravihari,
  • M. D. S. T. de Croos

摘要

Petrochemical-based food packaging materials such as polythene and plastic are non-biodegradable and may release harmful substances to the packed food and the environment. Hence, the demand for healthy and safe food wrapping options is increasing. In addition, more than 50% of a fish is discarded as waste during commercial processing. This study developed a food packaging film using chitosan extracted from giant freshwater prawn (Macrobrachium rosenbergii) shell waste and collagen extracted from yellowfin tuna (Thunnus albacares) skin waste using a protocol modified in this study. Six types of films were developed by dissolving chitosan and collagen in acetic acid under three different ratios of chitosan: collagen by weight (100: 0, 75: 25, 50: 50) at two different pH levels (pH 1, pH 3). Prepared films were characterised as food packaging films using physical properties: film thickness; grammage; density; colour; optical property; moisture content; swelling; water vapour permeability; solubility; tensile strength; and chemical properties: antioxidant activity. Further, thermal properties: degradability in hot water; degradability in microwave oven; and thermo-gravimetric properties were measured. Moreover, biodegradability of these films was tested in soil. The crystallinity was analysed using XRD spectroscopy. Films prepared at 75: 25 (chitosan: collagen) by weight at pH 3 showed optimal properties. The modified method reduces processing time from 40 h to 20 min, lowers electricity cost, and eliminates chemical usage such as glycerol. The developed film is transparent and thin, having transparency and antioxidant properties, thermally-stable up to 300 °C and biodegradable in soil in less than 15 days. This offers a more demanding and greener solution to replace petrochemical-based food packaging materials.

Graphical abstract