title: Some properties of starches of grain amaranths and several millets.
abstract: 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.
mesh_terms: D000681:Amylases; D000687:Amylopectin; D000688:Amylose; D055598:Chemical Phenomena; D002621:Chemistry; D002523:Edible Grain / Q000032:analysis*; D007517:Isoamylase; D019684:Magnoliopsida / Q000032:analysis*; D010194:Pancreatin; D008897:Panicum / Q000032:analysis*; D013045:Species Specificity; D013213:Starch / Q000032:analysis*; D014961:X-Ray Diffraction
chemical_list: D010194:Pancreatin; D013213:Starch; D000688:Amylose; D000687:Amylopectin; D000681:Amylases; D007517:Isoamylase