Tomita Y, Sugimoto Y, Sakamoto S, Fuwa H
J Nutr Sci Vitaminol (Tokyo). 1981;27(5):471-84. doi: 10.3177/jnsv.27.471.
Starch granules were prepared from seeds of Amaranthus hypochondriacus L., A. caudatus L., proso millet, Japanese barnyard millet and foxtail millet. Amylose contents and the distribution of alpha-1,4 linked chain of amylopectin were determined by gel filtration of isoamylase-debranched starches. Some physical and chemical properties of the starches were also examined by scanning electron microscopy, X-ray diffractometry, photopastegraphy, and differential scanning calorimetry, together with starch-granule susceptibility to amylases. The existence of both normal and waxy types in the same species of a grain amaranth, A. hypochondriacus L., was confirmed. A. caudatas starches were identified to consist of mainly typical amylopectin and 5-7% amylose. The starches have some unique properties, namely, high starch-granule susceptibility values to amylases as well as those of A. hypochondriacus and unique pasting properties.
淀粉颗粒取自皱果苋、尾穗苋、黍、稗和粟的种子。通过异淀粉酶脱支淀粉的凝胶过滤法测定直链淀粉含量和支链淀粉α-1,4连接链的分布。还通过扫描电子显微镜、X射线衍射法、光糊化图谱和差示扫描量热法，以及淀粉颗粒对淀粉酶的敏感性，对淀粉的一些物理和化学性质进行了研究。证实了在同一物种皱果苋中存在普通型和糯质型。尾穗苋淀粉被鉴定主要由典型的支链淀粉和5-7%的直链淀粉组成。这些淀粉具有一些独特的性质，即对淀粉酶的淀粉颗粒敏感性值较高，与皱果苋淀粉一样，且具有独特的糊化特性。
