泡叶藻的营养成分分析及评价

为评估泡叶藻的营养价值，对泡叶藻的主要营养成分、氨基酸组成、脂肪酸组成、无机元素、重金属、褐藻胶和甘露醇等含量进行检测和分析。结果表明，泡叶藻的主要成分为总膳食纤维，含量为40.68%，其中可溶性膳食纤维含量8.54%；粗蛋白含量9.66%，检测出18种氨基酸，氨基酸总含量为7.99 g/100 g，其中必需氨基酸占氨基酸总量的为37.90%，呈味氨基酸占氨基酸总量的40.25%，第一限制性氨基酸为苏氨酸，氨基酸评分134.98，氨基酸组成比例均衡；粗脂肪含量1.53%，其中不饱和脂肪酸占总脂肪酸总量的43.92%；灰分含量39.43%，常量元素K、Na、Ca和微量元素Fe、Zn、Sn等含量丰富；褐藻胶和甘露醇含量高。综上，泡叶藻是一种高膳食纤维、高蛋白、低脂肪的藻类，在食品、海藻化工和饲料领域具有较高开发利用价值。

Chemical Analysis and Nutritional Assessment of Ascophyllum nodosum

In order to evaluate the nutritional value of Ascophyllum nodosum, the contents of main nutrients, such as amino acids, fatty acids, inorganic elements, heavy metals, alginate and mannitol were analyzed. The results showed that the main component of Ascophyllum nodosum was total dietary fiber, which accounted for 40.68% of its dry weight. The content of soluble dietary fiber was 8.54%.The content of crude protein was 9.66% and 18 kinds of amino acids were detected. The total content of amino acids was 7.99 g/100 g, among which the essential amino acids accounted for 37.90% and taste amino acids 40.25% of total amino acids, respectively. The first limiting amino acid was threonine and the amino acid score was 134.98, which indicated that the proportion of amino acids was balanced. The content of crude fat was 1.53%, in which the content of unsaturated fatty acids accounted for 43.92% of the total fatty acids. The ash content was 39.43% with rich macroelements K, Na, Ca and microelements Fe, Zn and Sn. The alginate and mannitol content were high. In conclusion, Ascophyllum nodosum is a kind of algae with high dietary fiber, high protein, and low fat, indicating that it has high development and utilization value in the fields of food, seaweed chemical industry and feed.