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  • Title: The effects of extruded corn flour on rheological properties of wheat-based composite dough and the bread quality.
    Author: Sun H, Ju Q, Ma J, Chen J, Li Y, Yuan Y, Hu Y, Fujita K, Luan G.
    Journal: Food Sci Nutr; 2019 Sep; 7(9):2977-2985. PubMed ID: 31572591.
    Abstract:
    The effects of extruded corn flour (ECF) on the rheological properties of the wheat-based composite dough and quality of the bread were investigated. The RVA results of the composite flour with ECF showed weak thermal viscosity and resistance to starch retrogradation. Mixolab tests revealed that the water absorption capacity increased with the increasing amount of ECF, while dough development time (DT) and dough stability (ST) showed a downward trend, and the composite dough became more resistant to retrogradation. The microstructure of the composite dough showed that the presence of both ECF and unextruded corn flour (UECF) resulted in a more broken gluten matrix. The breads made from the composite flour with ECF had significantly softer texture, lower hardening percentage with storage time, darker crust color, larger specific volume, and higher sensory scores than the UECF ones. It is concluded that the extrusion of corn flour is an effective way to improve the quality of the composite bread and retard staling during storage.
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