Journal
FOOD CHEMISTRY
Volume 216, Issue -, Pages 194-200Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2016.08.045
Keywords
Pigmented rice; Storage; Starch; Crystallinity; Pasting properties
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The aim of this study was to evaluate the physicochemical, morphological, crystallinity, thermal, and pasting properties of starches isolated from rice grains with brown, black, and red pericarp. Starch was isolated from the rice grains at initial storage time, and after 6 months of storage at different storage temperatures (16, 24, 32 and 40 degrees C). Starch isolated from the grains stored for 6 months at 40 degrees C showed darker coloration, surface deformation of granules, and a significant reduction in the extraction yield, final viscosity, enthalpy, and crystallinity, independent of the grain pericarp coloration. The time and storage temperature not influence the swelling power and solubility of starch isolated from grains with brown pericarp, while for the grains with black and red pericarp there was reduction in swelling power and solubility of starches isolated of grains stored at 40 degrees C. Grains stored at 16 degrees C showed minimum changes in starch properties. (C) 2016 Elsevier Ltd. All rights reserved.
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