Effect of supplementation on physicochemical, sensory and nutritional characteristics of bread.

Supplementation of wheat flour with soy flour (full fat and defatted) at 5, 10, 15 and 20% levels was carried out to test the effect on physico-chemical, sensory, nutritional evaluation and shelf life of breads. Adding 10% of soy flour (full fat and defatted) produced breads with good baking and organoleptic characteristics. However, at 15 and 20% levels they were less acceptable. The better breads were further investigated for various nutritional parameters and shelf life. Full fat and defatted soy flour (10%) supplemented bread exhibited 13.66 and 13.81% protein, and 3.02 and 3.05 g/100 g protein total lysine contents as compared to control (wheat) bread (11.47% protein and 2.36 g/100 g protein total lysine). Other nutrients are also increased in supplemented breads as compared to wheat bread. However, for storage, defatted soy supplemented bread exhibited better shelf life than the full fat version.