Some properties of starches of grain amaranths and several millets

• Published in: Journal of Nutritional Science and Vitaminology Vol. 27; no. 5; pp. 471 - 484
• Main Authors: Tomita, Y, Fuwa, H. (Osaka City Univ. (Japan). Faculty of Science), Sugimoto, Y, Sakamoto, S
• Format: Journal Article
• Language: English
• Published: Japan Center for Academic Publications Japan 01.01.1981
• Subjects: ALMIDON; AMARANTE A GRAINS; AMARANTHACEAE; AMARANTHUS; AMARANTHUS CAUDATUS; Amaranthus caudatus L; AMARANTHUS HYPOCHONDRIACUS; Amaranthus hypochondriacus L; AMARANTO DE GRANO; AMIDON; Amylases; Amylopectin; Amylose; amylose content; CARBOHIDRATOS; CARBOHYDRATES; CENTROSPERMAE; CEREALE; CEREALES; CEREALS; characteristics of amylopectin; Chemical Phenomena; CHEMICOPHYSICAL PROPERTIES; Chemistry; COMPOSE ORGANIQUE; COMPUESTOS ORGANICOS; CROPS; CULTIVOS; CULTIVOS DE GRANO; DICOTILEDONEAS; DICOTYLEDONE; DICOTYLEDONS; ECHINOCHLOA; ECHINOCHLOA FRUMENTACEA; ECONOMIC PLANTS; Edible Grain - analysis; FEED CROPS; FEED GRASSES; foxtail millet; GLUCIDE; GLUMIFLORAE; grain amaranth starch; GRAIN AMARANTHS; GRAIN CROPS; GRAMINEAE; GRAMINEAS; GRAMINEAS FORRAJERAS; GRAMINEE; GRAMINEE FOURRAGERE; GRASSES; GREEN VEGETABLES; HORTALIZAS (PLANTAS); HORTALIZAS VERDES; Isoamylase; Japanese barnyard millet; LEGUME FEUILLE; Magnoliopsida - analysis; MIJOS; MILLET; millet starch; MILLETS; MONOCARPOS ORNAMENTALES; MONOCOTILEDONEAS; MONOCOTYLEDONE; MONOCOTYLEDONS; ORGANIC COMPOUNDS; ORNAMENTAL MONOCARPS; ORNAMENTAL PLANTS; Pancreatin; PANICUM; Panicum - analysis; PANICUM MILIACEUM; PLANTAS; PLANTAS DE VALOR ECONOMICO; PLANTAS FORRAJERAS; PLANTAS ORNAMENTALES; PLANTE; PLANTE A GRAINS; PLANTE D'INTERET ECONOMIQUE; PLANTE DE CULTURE; PLANTE FOURRAGERE; PLANTE LEGUMIERE; PLANTE ORNEMENTALE; PLANTE ORNEMENTALE MONOCARPIQUE; PLANTS; POLISACARIDOS; POLYHOLOSIDE; POLYSACCHARIDES; properties of starch; PROPIEDADES FISICO-QUIMICAS; PROPRIETE PHYSICO-CHIMIQUE; proso millet; PSEUDOCEREALES; PSEUDOCEREALS; SETARIA (GRAMINEA); SETARIA (GRAMINEE); SETARIA (GRASS); SETARIA ITALICA; SEUDOCEREALES; Species Specificity; STARCH; Starch - analysis; VEGETABLE CROPS; X-Ray Diffraction
• ISSN: 0301-4800; 1881-7742
• 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 α-l, 4 linked chain of amylopectin were determined by gel filtration of isoamylasedebranched 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. caudatus 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.