Distribution of minerals in quinoa (Chenopodium quinoa Willd.) seeds
Distribution of minerals in quinoa (Chenopodium quinoa Willd.) seeds
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DOI：
10.1271/bbb.68.231
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发表时间：
2004-01-01
影响因子：
1.6
通讯作者：
Wada, M
中科院分区：
文献类型：
--
作者：
Konishi, Y;Hirano, S;Wada, M
采用能量色散x射线显微分析（EDX）和扫描电镜（SEM）相结合的方法研究了藜麦种子中矿物质的分布。磷、钾、镁在胚胎组织中的定位一致。由于已知植肽球状体存在于藜麦种子胚胎细胞的蛋白体中，因此认为P是由植酸形成的，而K和Mg则形成植酸。钙和钾存在于果皮中，那里的细胞壁很厚，这表明这些矿物质与果胶有关。硫发生在胚胎组织中，它可能来源于组织中储存蛋白的硫氨基酸残基。藜麦种子的磨损导致其钙含量显著降低。
The distribution of minerals in quinoa (Chenopodium quinoa Willd.) seed was examined using energy dispersive X-ray microanalysis (EDX) in combination with scanning electron microscopy (SEM). Phosphorus, K, and Mg coincided in localization in embryonic tissue. Since phytin globoids have been known to localize in protein bodies in embryonic cells of quinoa seed, it is thought that P is attributed to phytic acid and that K and Mg form to phytate. Calcium and K were present in the pericarp, where the cell wall is thickly developed, suggesting that these minerals are associated with pectin. Sulfur occurred in embryonic tissues, which would be derived from sulfur amino acid residues of storage proteins concentrated in the tissues. Abrasion of quinoa seeds resulted particularly in decrease in Ca content.