In vitro measurement of resistant starch of cooked milled rice and physico-cheMical characteristics affecting its formation
文献类型: 外文期刊
第一作者: Zhang, Wenwei
作者: Zhang, Wenwei;Bi, Jingcui;Yan, Xiaoyan;Wang, Hailian;Zhu, Changlan;Wang, Hankang;Wan, Jianmin
作者机构:
关键词: rice;resistant starch;amylose content;elongation
期刊名称:FOOD CHEMISTRY ( 影响因子:7.514; 五年影响因子:7.516 )
ISSN: 0308-8146
年卷期: 2007 年 105 卷 2 期
页码:
收录情况: SCI
摘要: Resistant starch (RS) content was determined in 10 indica and japonica milled rices with different levels of amylose. The effect of microbial growth during starch digestion on the measurement of RS, and the correlation between physico-chemical characteristics and RS contents of milled rice were analysed. Results indicated a significant decrease (P < 0.01) in assay values of RS after antibiotics addition, and the markedly decreased sample pH due to fermentation might be the main reason for errors in RS determination. Correlation analyses showed that RS contents of milled rice were closely related to amylose content (r = 0.75, P < 0.05) and protein content (r = 0.78, P < 0.01). No significant correlation existed between RS content and some relatively simple physical properties, such as width, shape and elongation ratio of rice grain, which were reported to be good indictors of rate of rice starch digestion, while a significant positive correlation was found between elongation ratio and digestible starch in cooked milled rice (r = 0.67, P < 0.05). (c) 2007 Elsevier Ltd. All rights reserved.
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