Chemical Composition And Functional Characteristics Of Wheat/African Oil Bean Flour Blends And Sensory Attributes Of Their Cookies
Keywords:
Wheat cookies, Wheat/African oil bean composite flour, Chemical composition, Sensory attributesAbstract
Wheat flour (WF) was substituted with African oil bean seed flour (AOBF) at 0, 5, 10, 15 and 20% in cookies. The chemical and functional properties of the flours and their blends as well as the physical and sensory attributes of the cookies were determined. The flour blends had higher fat, ash and protein than the 100% wheat flour. The level of these nutrients improved as the amount of AOBF in the blend increased. Gross energy also increased as AOBF increased in the blend, WF having 398.91 and AOBF 676.01 kcal/100 g. The WF, AOBF and the blends were all rich in macro-elements (K, Na, Ca, Mg and P), and low in Fe and Zn. Phytate content was highest in WF, and generally reduced as the level of AOBF increased in the blends. Water absorption increased while the oil absorption generally decreased with increasing substitution levels. Wheat flour exhibited the highest foaming capacity and stability followed by the 5% AOBF substitution and then the 100% AOBF. AOBF had the highest bulk density of 0.87 g cm-3 while that of WF was 0.78 g cm-3. There were no significant differences (P>0.05) in the weight and height of the cookies. Also, no significant difference (P>0.05) existed for taste, aroma and texture of wheat cookies and the composite cookies but significant difference (P<0.05) existed for colour. All the composite cookies were as acceptable as the 100% wheat cookie, with the 5% AOBF substitution being rated better than the 100% wheat cookie.
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