籽粒苋鲜茎叶蛋白质含量及叶蛋白提取效率研究

对Ｋ１１２、Ｒ１０４等８个籽粒苋品种分不同时期进行了鲜茎叶蛋白含量分析和叶蛋白提取试验研究。结果表明，籽粒苋属于高蛋白质含量作物，全生育期叶蛋白含量平均达２８．７６％，采穗后茎叶平均蛋白质含量仍可达１１．１５％，其最佳利用时期为现蕾期至开花期，其中Ｒ１０４、Ｒ１０１１、Ｋ５７４蛋白质含量较高。

A Study on the Protein Content in Green Stem and Leaf of Grain Amaranth and the Extraction Efficiency of Leaf Protein

The analysis of the protein content in the green stem and leaf, and the experiment on the leaf protein extraction of eight Grain amaranth species such as K112, R104 and so on in different physiological phases were conducted. The results show that Grain amaranth is a crop with high protein content, and the leaf protein content during its life span is 28.76% (dry specific gravity) in average, and 11.15% after tassel harvest. The best stage for utilization is from budding till flowering, during which, R104, R1011 and K574 contain more protein; and this is the optmum stage for leaf protein extraction. There are notable differences among species in which the K112, R104 and R1011 are proved to be the best. After comprehensive analysis of the vate and efficiency of extraction of the eight species in the study, it has been concluded that the best stage for leaf protein extraction is the budding stage and the best species sorted for it are K112, R104, R1011, K574, K459, D88-1, R158 and K409 in order.