Starch digestibility and the estimated glycemic score of different types of rice differing in amylose contents
文献类型: 外文期刊
第一作者: Hu, PS
作者: Hu, PS;Zhao, HJ;Duan, ZY;Zhang, LL;Wu, DX
作者机构:
关键词: rice;starch digestibility;estimated glycemic score;resistant starch
期刊名称:JOURNAL OF CEREAL SCIENCE ( 影响因子:3.616; 五年影响因子:3.891 )
ISSN: 0733-5210
年卷期: 2004 年 40 卷 3 期
页码:
收录情况: SCI
摘要: Three types of rice cultivars (indica, japonica and hybrid rice) with four levels of amylose were selected for assessing variability in starch digestibility. A vitro enzymatic starch digestion method was applied to estimate the glycemic index in vivo based on the kinetics of starch hydrolysis in vitro. The results indicated that significant differences in term of glycemic response were observed in three types of rice. Amylose content had an obviously impact on the estimated glycemic score (EGS) value and resistant starch (RS) content. The contents of RS were increased with the increasing amylose in the same type of rice. Japonica rice was significantly lower in RS content compared to indica rice and hybrid rice with similar amylose. The high amylose rice cultivar ZF201, which was characterized by low major RVA parameters, i.e. peak viscosity (PKV), hot paste viscosity (HPV) and cool paste viscosity (CPV), were obviously higher in RS content and lower in EGS. The retrogradation of cooked rice led to a reduction of HI and EGS of all varieties. Starch hydrolysis tends to be more quick and complete for the waxy and low amylose rice than for the intermediate and high amylose rice. (C) 2004 Elsevier Ltd. All rights reserved.
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