期刊
FOOD CHEMISTRY
卷 105, 期 2, 页码 491-497出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2007.04.005
关键词
rice; storage; cooking; residual cooking water; amylose leaching; texture
The differences in the properties of residual cooking water and the textural profile of cooked rice grain following storage at 4 degrees C and 37 degrees C were examined. The higher temperature storage led to greater water uptake, reduced pH and turbidity of residual cooking liquid. The solids content in the residual cooking water also significantly (p < 0.001) decreased following storage at 37 degrees C compared to 4 degrees C storage. Textural profile of the cooked rice grain also differed for rice grains under the two storage temperatures. Hardness increased (p < 0.01) and adhesiveness reduced (p < 0.01) following storage at 37 degrees C compared to 4 degrees C. Moreover, analysis of the hot-water soluble fraction suggested that storage at 37 degrees C decreased the leaching of starch components, particularly amylose. The cooked rice grains were also visualized using scanning electron microscopy, and the cooked rice following storage at 4 degrees C showed smoother surfaces than that of the cooked rice following storage at 37 degrees C. (c) 2007 Elsevier Ltd. All rights reserved.
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