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Appropriate amount of modified corn flour improves the structural and physicochemical properties of wheat dough
Mengdi Song1,2,3, Zhiqiang Fan1, Zhan Liang1
1School of Food Science, Henan Institute of Science and Technology, Xinxiang 453003, China.
Abstract:
This study investigated effects of superfine grinding modified corn flour (SG-CF) and hot blanching modified corn flour (HB-CF) on properties of wheat flour and dough to improve the suitability of corn flour in flour products. Results indicated that the addition of SG-CF or HB-CF reduced the moisture and protein content of the mixed flour, and increased the dietary fiber content and free water proportion. Compared with SG-CF, HB-CF was more helpful enhancing the thermal stability and anti-aging properties of the mixed flour. When the amount of SG-CF was less than 15 % or the amount of HB-CF was less than 20 %, the texture properties and microstructure of the wheat dough was maintained. However, the excessive addition of SG-CF or HB-CF destroyed the gluten network structure. Results of this study are expected to provide valuable guidance for the application of SG-CF and HB-CF in flour-based products.
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