Konishi Yotaro, Hirano Shigeru, Tsuboi Hideki, Wada Masao
Graduate School of Human Life Science, Osaka City University, Osaka, Japan.
Biosci Biotechnol Biochem. 2004 Jan;68(1):231-4. doi: 10.1271/bbb.68.231.
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.
利用能量色散X射线微区分析（EDX）结合扫描电子显微镜（SEM）对藜麦（Chenopodium quinoa Willd.）种子中的矿物质分布进行了研究。磷、钾和镁在胚胎组织中的定位一致。由于已知肌醇六磷酸球状体存在于藜麦种子胚胎细胞的蛋白体中，因此认为磷归因于植酸，而钾和镁形成肌醇六磷酸。钙和钾存在于果皮中，果皮的细胞壁发育很厚，这表明这些矿物质与果胶有关。硫出现在胚胎组织中，这可能来自于集中在这些组织中的储存蛋白的硫氨基酸残基。藜麦种子的磨损尤其导致钙含量降低。
