Effects of Blending Ratio and Processing of Lupine Bean On Nutritional Quality and Sensory Evaluation of Wheat-Lupine Bread

Abstract Background Bread is one of the most popular and widespread baked products in the world. It is an important staple food made of wheat flour, salt, and yeast. However, wheat protein is lower than that of proteins from pulses. White lupine is a good source of protein, fiber, minerals, and vitamins. It has some anti-nutritional factors which inhibit its consumption. The use of lupine as human food, specifically in baked products has been limited. Objective This study was conducted to investigate the effect of blending ratio and processing of lupine bean on nutritional quality and sensory evaluations of wheat-lupine bread. Methods The study was done by factorial design. All white lupine bean was prepared in a randomized completely block design (RCBD). The quality characteristics of bread were analyzed by three-way ANOVA (Analysis of Variance) was carried out to determine the F-value and the level of significance, Duncan’s multiple range tests at 5% probability were used for the comparison between means using statistical tools of SPSS version 25. Result The effect of processing and blending ratio (140:10:15) had a high value in protein, fat, and mineral content. Sensory acceptance of wheat-lupine bread was affected by the interaction of blending ratio and processing. On a 5 point hedonic scale, the composite sample wheat flour with 5, 10, and 15% white lupine flour and supplementation had the highest scores were 4.60, 3.80, 3.80, 4.40, and 3.95 in color, taste, flavor, appearance, and overall acceptability respectively.