a b s t r a c t
Sesame coat is a valuable by-product. The study was carried out on sesame peels flour at different replacing
levels of white wheat flour in five cookies dough formulations. The functional properties of composite
flours such as swelling capacity, water holding capacity, oil holding capacity, emulsifying capacity, foam
capacity, gelatinization temperature, least gelation concentration and bulk density were increased with
increase in the sesame peels flour incorporation along with wheat flour. Texture analysis of dough
revealed that, the addition of sesame peels flour affected the quality of dough in terms of hardness, cohesion,
adhesion and breaking strength. Cookies supplemented with sesame peels flour showed interesting
physical properties with lower moisture content and higher spread factor than those made by white
wheat flour. But, their hardness increase with the increase of the replacement ratio and their color
becomes indesirable. Interestingly, sensory results indicated that cookies supplemented with sesame
peels flour were acceptable at a level that not exceeds 30% of incorporation. By the addition of SPB1 biosurfactant
at 0.1%, the dough texture profile was significantly improved and the action of this bioemulsifier
was more pronounced than a commercial emulsifier known as glycerol monostearate. With the
addition of SPB1 biosurfactant on cookies’ dough, we manage to obtain cookies softer and with better
overall quality.