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<p>The characterization of fatty acid composition and protein content is fundamental for evaluating the chemical and nutritional value of marine-derived biomaterials. In this study, the invasive blue crab <i>Portunus segnis</i>, which abundant in Mediterranean coastal waters, was investigated for its potential as a chemically rich resource. A crab meal (CM) derived from <i>P. segnis</i> was analyzed for its ability to entirely replace fishmeal (FM) in experimental formulations. Diets containing 20%, 30%, and 40% CM were administered to <i>Chelon ramada</i> and <i>Oreochromis niloticus</i> during a 12-week trial. The study emphasized chemical analysis, particularly the profiling of muscle fatty acid composition and the calculation of nutritional lipid indices. Fatty acid methyl esters (FAMEs) were identified and quantified using an Agilent 6890 Gas Chromatograph, providing detailed insights into lipid quality. The 40% CM formulation resulted in enhanced lipid profiles, improved n-3/n-6 ratios, and significant reductions in atherogenic and thrombogenic indices, along with increased protein deposition. These findings demonstrate the biochemical value of <i>P. segnis</i> as a dual source of high-quality lipids and proteins. Its valorization contributes to the sustainable use of invasive marine biomass and aligns with green chemistry and circular bioeconomy principles. By combining nutritional relevance with precise chemical characterization, this work illustrates the role of applied chemistry in converting ecologically disruptive species into value-added materials for functional applications, including – but not limited to – aquafeed development.</p>

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Fatty Acid Profiling and Nutritional Lipid Index Analysis of Portunus Segnis Meal as a Functional Fishmeal Substitute in Chelon Ramada and Oreochromis Niloticus

  • 期刊论文

  • 发表日期：

    2025年8月22日

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  • Siwar Hachana,
  • Boutheina Ben Abdallah,
  • Imen Rabeh,
  • Abdel Halim Harrath,
  • Ana Teresa Juarez-Facio,
  • Imed Cheraief,
  • Olivier Joubert,
  • M’hamed Elcafsi

摘要

The characterization of fatty acid composition and protein content is fundamental for evaluating the chemical and nutritional value of marine-derived biomaterials. In this study, the invasive blue crab Portunus segnis, which abundant in Mediterranean coastal waters, was investigated for its potential as a chemically rich resource. A crab meal (CM) derived from P. segnis was analyzed for its ability to entirely replace fishmeal (FM) in experimental formulations. Diets containing 20%, 30%, and 40% CM were administered to Chelon ramada and Oreochromis niloticus during a 12-week trial. The study emphasized chemical analysis, particularly the profiling of muscle fatty acid composition and the calculation of nutritional lipid indices. Fatty acid methyl esters (FAMEs) were identified and quantified using an Agilent 6890 Gas Chromatograph, providing detailed insights into lipid quality. The 40% CM formulation resulted in enhanced lipid profiles, improved n-3/n-6 ratios, and significant reductions in atherogenic and thrombogenic indices, along with increased protein deposition. These findings demonstrate the biochemical value of P. segnis as a dual source of high-quality lipids and proteins. Its valorization contributes to the sustainable use of invasive marine biomass and aligns with green chemistry and circular bioeconomy principles. By combining nutritional relevance with precise chemical characterization, this work illustrates the role of applied chemistry in converting ecologically disruptive species into value-added materials for functional applications, including – but not limited to – aquafeed development.