Abstract:To systematically analyse the nutritional value of Bangia fusco-purpurea, we have detected the nutrient content according to the national standard biochemical assay. The results showed that dry weight content of moisture, crude ash, crude fat, crude protein and crude fiber in Bangia fusco-purpurea were 10.90%, 10.00%, 3.78%, 39.42% and 17.20%, respectively. Eighteen kinds of amino acids were determined, in which essential amino acids was accounting for 35.53%, sweet amino acids and flavor amino acids were accounting for 49.87% of total amino acids. The highest mass fractions of amino acid was glutamic acid, reaching 4.79%. The total mass fractions of fatty acids were 3.77%, in which the w-3 polyunsaturated fatty acids EPA composed 39.26%. The Bangia fusco-purpurea was rich in minerals, such as kalium (K), sodium (Na), phosphorus (P), magnesium (Mg), manganese (Mn), calcium (Ca) and iron (Fe). The highest mass fractions in macro and trace elements of Bangia fusco-purpurea was K (2 627.17 mg/hg) and Fe (31.80 mg/hg) respectively. This study demonstrated that Bangia fusco-purpurea was a kind of economic seaweed with higher protein and dietary fibre, which had a better researching prospect.
