红毛藻营养成分分析与评价

为了对红毛藻的营养价值进行全面的分析及评价。采用国家标准生化测定法检测红毛藻（Bangia fusco-purpurea）的营养成分。测得红毛藻干品的水分、灰分、粗脂肪、粗蛋白质以及粗纤维的质量分数分别为10.90%、10.00%、3.78%、39.42%和17.20%；检出含有18种氨基酸，必需氨基酸质量分数为总量的35.53%，鲜味和甜味氨基酸质量分数占总氨基酸的49.87%，谷氨酸的质量分数最高（4.79%）；测得脂肪酸总质量分数为3.77%，其中?棕-3系列的多不饱和脂肪EPA的质量分数最高，占总脂肪酸质量分数的39.26%；红毛藻中含有多种矿物质如 钾、钠、磷、镁、锰、钙、铁等元素，宏量及微量元素里质量分数最高分别为钾（2 627.17 mg/hg）和铁元素（31.80 mg/hg）。研究表明，红毛藻为高蛋白质和膳食纤维、营养价值丰富的经济海藻，具有较好的开发前景。

Analysis and Evaluation of Nutritional Components in Bangia fusco-purpurea

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.