Protein content and amino acid composition of some varieties of grain sorghum
Protein content and amino acid composition of some varieties of grain sorghum
复制标题
部分高粱品种蛋白质含量及氨基酸组成
DOI：
10.1021/jf60156a022
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发表时间：
1968
期刊：
影响因子：
--
通讯作者：
L. Sastry
中科院分区：
文献类型：
--
作者：
T. K. Virupaksha;L. Sastry
对一些非杂交高粱品种的蛋白质含量和赖氨酸水平的测定表明，蛋白质含量有很大的差异。对赖氨酸含量数据的统计分析表明，蛋白质中赖氨酸的百分比与种子中蛋白质的百分比之间存在负相关。本文测定了高、低蛋白质型五个高粱品种胚乳中各种蛋白质组分的比例。结果表明，醇溶谷蛋白和谷蛋白是主要的蛋白质组分，高粱品种中蛋白质水平的增加主要与醇溶谷蛋白组分的增加相关。用离子交换法对9个高蛋白和低蛋白高粱品种的氨基酸组成进行了分析。高粱的高蛋白基因品种之一在种子中具有高浓度的赖氨酸。还报道了两个品种的蛋白质组分的氨基酸组成。这些数据允许高粱蛋白质的营养质量和影响蛋白质质量的因素的评价。
Determination of the protein content and lysine levels of a number of nonhybrid varieties of grain sorghum indicates large variations in the protein content. Statistical analysis of data on amounts of lysine shows that a negative correlation exists between per cent lysine in the protein and per cent protein in the seed. The proportion of various protein fractions in endosperm of five varieties of grain sorghum of both low- and high-protein type has been determined. Results show that prolamine and glutelin are the principal protein fractions, and increased protein levels in sorghum varieties are correlated with an increase mainly in the prolamine fraction. Nine high- and low-protein varieties of grain sorghum have been analyzed for their amino acid composition by ion exchange procedures. One of the high-protein genetic varieties of sorghum has a high concentration of lysine in the seed. Amino acid composition of the protein fractions of two varieties is also reported. These data permit an evaluation of the nutritional quality of sorghum protein and factors that influence the quality of the protein.