Comparative study of the effect of starches from five different sources on the rheological properties of gluten-free model doughs
文献类型: 外文期刊
第一作者: Zhang, Duqin
作者: Zhang, Duqin;Mu, Taihua;Sun, Hongnan
作者机构:
关键词: Starch;Gluten-free model dough;Rheological properties;Network structure;Moisture distribution
期刊名称:CARBOHYDRATE POLYMERS ( 影响因子:9.381; 五年影响因子:8.678 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: We investigated the effect of wheat (WS), corn (CS), tapioca (TS), sweet potato (SS) and potato (PS) starches on the rheological properties of starch-hydroxypropylmethylcellulose (HPMC) model doughs. Significant differences were found among model doughs made with different starches in terms of water absorption, development time, and strength. The PS-HPMC dough presented higher maximum creep compliance, followed successively by SS-, TS-, CS-, and WS-HPMC doughs, and the same order was found for the degree of dependence of G on frequency sweep, suggesting that the resistance to deformation depends on network structure stability. More water distributed between hydration sites of HPMC and starch surface, leading to more hydrogen bonds and the formation of stable network. In conclusion, the rheological properties of model doughs are largely due to variation in structural and physicochemical properties of different starches, as well as varying interactions between different starches and HPMC. (C) 2017 Published by Elsevier Ltd.
分类号: O629`Q53
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