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<p><i>Sargassum muticum</i> is a globally distributed seaweed with high economic potential, yet its detailed nutritional composition remains undercharacterized. In this study, we analyzed the nutritional profiles of five thallus portions, namely apical fronds, middle fronds, basal fronds, receptacles and air bladders, to assess their economic value accordingly. Results showed that middle fronds had the highest crude protein (31.98%) and crude fiber (7.10%) contents, indicating their suitability for protein-rich functional foods or dietary fiber supplements. Receptacles exhibited the highest levels of crude lipid (1.11%) and polyunsaturated fatty acids (123.01 mg/g), suggesting potential for bioactive lipid extraction in nutraceutical applications. By contrast, basal fronds were enriched in saturated (86.41 mg/g) and monounsaturated fatty acids (38.38 mg/g). The essential amino acid index ranged from 0.74 to 0.87, and total amino acid content peaked in middle fronds (77.90 mg/g), highlighting their high protein quality. Apical fronds had the highest calcium content (15611.95 mg/kg), and receptacles contained the highest phosphorus content (1224.45 mg/kg), supporting targeted mineral supplementation. The maximum concentrations of all trace elements were found in receptacles, reinforcing their pharmaceutical potential. This study provides foundational data on the nutrient composition of different thallus parts of <i>S. muticum</i>, which may support future research and potential utilization efforts in China.</p>

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Comparative Analysis of Nutrient Contents in Different Thallus Parts of Sargassum muticum

  • 期刊论文

  • 发表日期：

    2025年12月8日

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  • Qianhui Ma,
  • Qiaohan Wang,
  • Yan Liu,
  • Qingli Gong,
  • Huiru Li,
  • Xu Gao

摘要

Sargassum muticum is a globally distributed seaweed with high economic potential, yet its detailed nutritional composition remains undercharacterized. In this study, we analyzed the nutritional profiles of five thallus portions, namely apical fronds, middle fronds, basal fronds, receptacles and air bladders, to assess their economic value accordingly. Results showed that middle fronds had the highest crude protein (31.98%) and crude fiber (7.10%) contents, indicating their suitability for protein-rich functional foods or dietary fiber supplements. Receptacles exhibited the highest levels of crude lipid (1.11%) and polyunsaturated fatty acids (123.01 mg/g), suggesting potential for bioactive lipid extraction in nutraceutical applications. By contrast, basal fronds were enriched in saturated (86.41 mg/g) and monounsaturated fatty acids (38.38 mg/g). The essential amino acid index ranged from 0.74 to 0.87, and total amino acid content peaked in middle fronds (77.90 mg/g), highlighting their high protein quality. Apical fronds had the highest calcium content (15611.95 mg/kg), and receptacles contained the highest phosphorus content (1224.45 mg/kg), supporting targeted mineral supplementation. The maximum concentrations of all trace elements were found in receptacles, reinforcing their pharmaceutical potential. This study provides foundational data on the nutrient composition of different thallus parts of S. muticum, which may support future research and potential utilization efforts in China.