Tartary buckwheat (Fagopyrum tataricum Gaertn.) starch, a side product in functional food production, as a potential source of retrograded starch

卷:190

Gao, Jinfeng ; Kreft, Ivan ; Chao, Guimei ; Wang, Ying ; Liu, Xiaojin ; Wang, Li ; Wang, Pengke ; Gao, Xiaoli ; Feng, Baili

Northwest A&F Univ

关键词: Physicochemical properties;    Pasting;    Starch;    Tartary buckwheat;   

DOI  :  10.1016/j.foodchem.2015.05.122

学科分类：食品科学和技术

【 摘 要 】

A starch rich fraction is a side product in Tartary buckwheat processing. This study investigated the fractions that are of technological and nutritional interest. Tartary buckwheat starch granules had a diameter of 3-14 mu m, and presented a typical type "A" X-ray diffraction pattern. They contained nearly 39.0% amylose. The solubility of Tartary buckwheat starch was much lower at 70-90 degrees C (ranging within 9.9-10.4% at 90 degrees C) than that in maize (up to 49.3%) and potato (up to 85.0%) starch. The starch of one variety of Tartary buckwheat had significantly lower solubility at 70 degrees C and 80 degrees C than that of common buckwheat. The starch peak viscosity and breakdown were higher and pasting time was shorter in Tartary buckwheat than in that of the starch of common buckwheat. Tartary buckwheat starch had unique pasting and physicochemical properties, and is thereby capable of being exploited as a suitable raw material of retrograded starch in food processing. (C) 2015 Elsevier Ltd. All rights reserved.