豆渣营养成分分析及蛋白质营养价值评价

Nutritional Components Analyzation and Protein Nutrition Evaluation of Soybean Residue

以大豆豆渣为研究对象,在营养成分分析基础上,评价其蛋白质营养价值。研究结果表明,豆渣中主要营养成分为膳食纤维、蛋白质和碳水化合物,其中,膳食纤维含量达60.26%,蛋白质含量达18.17%;豆渣矿物质元素含量丰富,其中Ca含量达433.82 mg/100 g,远高于黄豆和奶片,是优良的钙质来源;重金属含量低于国家限量标准,是安全可靠的食品加工原料;氨基酸组成和占比与黄豆基本一致,第一限制氨基酸均为蛋氨酸和胱氨酸。蛋白质营养评价结果表明,豆渣蛋白质AAS、CS评分略低于黄豆,EAAI、BV、SRCAA与黄豆蛋白质基本一致,即豆渣除蛋白质含量较黄豆低,其蛋白质的营养价值与黄豆相近。因此,豆渣是高膳食纤维、高蛋白、高钙、低脂,蛋白营养价值接近大豆蛋白的健康食物原料。

Soybean residue was analyzed in contents of nutrients,and its protein nutrition value was estimated.The results showed that the main nutrients in soybean residue were dietary fiber,protein and carbohydrate;Its dietary fiber content reached 60.26%and protein content was 18.17%.Soybean residue contained rich mineral elements,and its calcium content reached 433.82 mg/100 g which was significantly higher than soybean and milk tablet.Heavy metals in soybean residue were lower than national limited standards,and were safe for processing.Amino acids composition and proportion in soybean residue were similar to soybean,and the first limiting amino acid was methionine and cysteine.Comparatively,the scores of AAS and CS were slightly lower in soybean residue than in soybean,and there was no significant difference in EAAI,BV and SRCAA between soybean residue and soybean.Soybean residue was healthy food materials with high dietary fiber,high protein,high calcium,low fat,and with almost the same protein nutrition evaluation as soybean.