Possibilities to Use Germinated Lupine Flour as an Ingredient in Breadmaking to Improve the Final Product Quality

Abstract

This study focuses on the possibility of using germinated lupine flour (GLF) in the breadmaking process in order to improve dough rheology and bread characteristics. For this purpose, different levels (0%, 5%, 10%, 15% and 20%) of germinated lupine flour were used, and the influence of its addition in wheat flour was analyzed. On empirical dough rheological properties, GLF addition in wheat flour has the effect of decreasing the water absorption capacity, dough consistency, baking strength, extensibility, tolerance for mixing and of increasing total gas production and falling number value. On fundamental dough rheological properties, GLF addition in wheat flour increased the tan δ and decreased the G′ and G″ modules with the increased dough temperature. The microscopic distribution of starch and gluten in the dough system was changed by GLF addition in wheat flour by an increase of the protein area and a decrease of the starch one. Regarding the bread characteristics, the GLF addition improved the specific volume, porosity and elasticity up to 15% GLF addition in wheat flour and decreased the textural properties gumminess and resilience. Regarding the color parameters of the bread, the GLF addition in the dough recipe had a darkening effect on the crumb and bread crust. The sensory data show that the bread samples up to 15% GLF addition in wheat flour were better appreciated than the control sample. According to our data, it is recommended to use a maximum level of 15% of the addition of germinated lupine flour in the dough recipe for making white wheat bread.