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<p>Mauritius, with one of the largest Exclusive Economic Zones in the Western Indian Ocean, hosts rich yet underexplored marine bioresources, including edible seaweeds. Lagoon-based aquaculture systems, such as the floating-cage fish farm at Pointe-aux-Feuilles, are recognized as environments that may experience localized nutrient enrichment and support abundant macroalgal growth, thereby offering a strategic foundation for the implementation of Integrated Multi-Trophic Aquaculture (IMTA) and advancing sustainable blue economy development. This study evaluated the antioxidant profiles of seven edible seaweeds colonizing aquaculture structures using validated Association of Official Analytical Chemists (AOAC) and spectrophotometric methods. Species-specific assessments of ascorbic acid, total phenolics, flavonoids, β-carotene chlorophyll a, and monomeric anthocyanins revealed significant interspecific variation (p &lt; 0.05). <i>Ulva torta</i> (tubular form) exhibited high Vitamin C content (640 ± 25.6&#xa0;mg/kg FW), indicating strong nutritional potential. <i>Padina santae-crucis (lineage #2)</i> showed the highest phenolic (22.25 ± 5.74&#xa0;mg/kg FW) and flavonoid content (398.8 ± 14.6&#xa0;mg/kg FW). Red seaweed <i>Dasya corymbifera</i> and <i>Gracilaria rangiferina</i> were enriched in β-carotene (28.18 ± 2.22&#xa0;mg/kg FW) and anthocyanins (0.301 ± 0.003&#xa0;mg/kg FW), while <i>Dasya corymbifera</i> had the highest chlorophyll <i>a</i> content (24.00 ± 0.05&#xa0;mg/kg FW). These results demonstrate the remarkable nutritional and functional value of native Mauritian seaweeds and their potential for sustainable food systems, nutraceutical development, and blue bioeconomy innovation. Further work should examine seasonal variability and health effects to support wider application.</p>

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Lagoonal aquaculture structures support antioxidant rich edible seaweeds with potential for integrated multitrophic aquaculture in Mauritius

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月14日

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  • Dishti Dabeedass,
  • Shingo Akita,
  • Christophe Vieira,
  • Naoki Tojo,
  • Futa Yao,
  • Nadeem Nazurally

摘要

Mauritius, with one of the largest Exclusive Economic Zones in the Western Indian Ocean, hosts rich yet underexplored marine bioresources, including edible seaweeds. Lagoon-based aquaculture systems, such as the floating-cage fish farm at Pointe-aux-Feuilles, are recognized as environments that may experience localized nutrient enrichment and support abundant macroalgal growth, thereby offering a strategic foundation for the implementation of Integrated Multi-Trophic Aquaculture (IMTA) and advancing sustainable blue economy development. This study evaluated the antioxidant profiles of seven edible seaweeds colonizing aquaculture structures using validated Association of Official Analytical Chemists (AOAC) and spectrophotometric methods. Species-specific assessments of ascorbic acid, total phenolics, flavonoids, β-carotene chlorophyll a, and monomeric anthocyanins revealed significant interspecific variation (p < 0.05). Ulva torta (tubular form) exhibited high Vitamin C content (640 ± 25.6 mg/kg FW), indicating strong nutritional potential. Padina santae-crucis (lineage #2) showed the highest phenolic (22.25 ± 5.74 mg/kg FW) and flavonoid content (398.8 ± 14.6 mg/kg FW). Red seaweed Dasya corymbifera and Gracilaria rangiferina were enriched in β-carotene (28.18 ± 2.22 mg/kg FW) and anthocyanins (0.301 ± 0.003 mg/kg FW), while Dasya corymbifera had the highest chlorophyll a content (24.00 ± 0.05 mg/kg FW). These results demonstrate the remarkable nutritional and functional value of native Mauritian seaweeds and their potential for sustainable food systems, nutraceutical development, and blue bioeconomy innovation. Further work should examine seasonal variability and health effects to support wider application.