Effect of Addition of Doum Fruits Powder on Chemical, Rheological and Nutritional Properties of Toast Bread

Abstract

The aim of study to produce high quality, nutritional value, sensory and rheological properties toast bread from doum fruit powder DFP and wheat flour WF. Four toast were prepared; by substituting wheat flour with 0, 10, 20 and 30% by doum fruit powder (DFP). The chemical, caloric value, physical and sensory properties of toast bread were studied. The results showed that addition of DFP to WF at different proportion due to an increase in water absorption (%), dough softening (B.U), dough development (min) and water holding capacity. Meanwhile, extensibility(mm) decreased in all doughs of DFP (10, 20 and 30%). Energy was decreased by addition of DFP at levels of 20 and 30% of DFP were (15 and 20 cm2), respectively. The results showed that increasing the levels of replacement increased ether extract, ash and crude fiber contents in prepared toast bread compared with control. Minerals of the prepared toast bread showed an increased in Ca, K, Mg and Fe while slightly decreased in P and Mn with increasing the proportions of replacement. The sensory evaluation results showed a significantly increase in the taste, odor, crumb grain and crumb texture by increasing the DFP substitution comparing with control.  Meanwhile, crust color, appearance and overall acceptability decreased than control.