Effect of fortification of de-oiled bottle gourd (Lagenaria Siceraria) seed on the functional and chemical characteristics of the biscuit: A nutritional assessment

Abstract

De-oiled bottle gourd (Lagenaria siceraria) seed is a highly nutritious by-product of edible oil industries. The seed contains a substantial amount of quality protein, dietary fiber, minerals, and essential amino acids. The present study is undertaken to improve the quality of commercial biscuit through replacement traditional wheat flour with de-oiled bottle guard seed cake powder. Response surface methodology was used to carry out experimental layout with two independent variables viz; de-oiled bottle guard seed coded as bottle guard seed cake powder (BGSCP) and whole wheat flour (WWF) against five dependent responses viz., swelling capacity (SC), water absorption capacity (WAC), oil absorption capacity (OAC), protein, insoluble and soluble fiber. The most desirable (R2 - 0.899) solution was found at the formulation level of 50g BGSCP and 40g WWF. Nutritional assessment of optimized biscuit heightened a significant (p < 0.05) rise in the amount of crude protein, ash content, and soluble fiber as in comparison with the control group sample. BGSCP fortification revealed significant improvement (43.22) in terms of essential amino acid availability as compared to control biscuit. However, the fatty acid compositions of optimized biscuit were insignificantly (p > 0.05) different. © 2018 The Author(s).