荞麦蛋白质组分中氨基酸和矿物质研究

在对 4个荞麦品种籽粒的蛋白质组分、各蛋白质组分中氨基酸组成及矿物质含量进行分析的基础上 ,探讨了蛋白质组分与氨基酸含量及蛋白质组分与矿物质含量间的分配关系 ,探讨了氨基酸和矿物质在荞麦籽粒蛋白质组分中的分布及比例 ,以及荞麦籽粒的营养价值。1　材料与方法1 .1　材料甜荞日本春播荞麦和榆荞 1号 ,苦荞日本夏播荞麦和榆荞 6-2 1为 1 997年收获的样品 ,分别由陕西省吴旗县和陕西省榆林农校提供。样品除杂后 ,于 38℃条件下风干 4 8h。样品用实验磨粉机粉碎 ,过 Φ0 .3mm圆孔筛 ,取筛下物作为分析样本。1.2方法采用蛋白质组分的连…

Studies on the Amino Acid and Mineral of Buckwheat Protein Fractions

Protein fractions in four buckwheat varieties of Japanese spring buckwheat,Japanese summer buckwheat,Yuqiao No.1 and Yuqiao 6 21,were extracted by successive extraction method and analyzed.Amino acid composition and mineral content in each protein component were also analyzed.Based on the data of experiment,the relationships between protein fractions and amino acid,and mineral element content of protein fractions,the distribution and proportion of amino acid and mineral element in each protein fractions in buckwheat kernel,as well as the nutrition of buckwheat kernel were discussed.The results show that the soluble protein content is high and prolamin content is very low in buckwheat kernel.Leucine is the first limited amino acid in buckwheat. The buckwheat kernel is rich of K,Zn in albumin,Ca,Mg,Mn in globulin,Na in prolamin and glutlin.