In vitro starch digestibility, degree of gelatinization and estimated glycemic index of foxtail millet-derived products: Effect of freezing and frozen storage
文献类型: 外文期刊
第一作者: Ren, Xin
作者: Ren, Xin;Chen, Jing;Wang, Chao;Molla, Mohammad Mainuddin;Shen, Qun;Diao, Xianmin
作者机构:
关键词: Foxtail millet;Starch digestion;Freezing process;Frozen storage
期刊名称:JOURNAL OF CEREAL SCIENCE ( 影响因子:3.616; 五年影响因子:3.891 )
ISSN:
年卷期:
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收录情况: SCI
摘要: To analyze the effects of the freezing process, frozen storage temperature and frozen storage time on starch digestion characteristics, 3 kinds of foxtail millet-derived products were produced and frozen stored at -18 degrees C or -40 degrees C. The in vitro starch digestibility, degree of gelatinization (DG) and estimated glycemic index (eGI) of reheated samples were investigated after frozen for 1, 3, 5, 7, 14, 21 and 28 days respectively. The results showed that the variation trends of DG, eGI and rapidly digestible starch content were basically the same during freezing and frozen storage. Starch digestion characteristics of frozen millet products stored at -40 degrees C were more stable than those of counterparts stored at -18 degrees C. The first two weeks, especially the first day of frozen storage, had a greater effect on starch digestibility, as compared to the rest days of frozen storage. Thus fresh prepared foxtail millet-derived products are required for determining the glycemic index of specific food or conducting a short-term dietary intervention while frozen stored products are available for long-term intervention. Moreover, addition of pregelatinized starch into millet pancake may increase its glass transition temperature and thus decrease its degradation rate. (C) 2016 Elsevier Ltd. All rights reserved.
分类号: S5
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