Characteristics of Whole Wheat, Red Kidney Bean and Defatted Coconut Flour Blends and Its Application in Bread Production
Vachefon Heuvey Forwoukeh *
Centre for Food Technology and Research, CEFTER, Benue State University, Makurdi, Nigeria.
Julius Amove
Department of Food Science and Technology, Joseph Sarwuan Tarka University, Makurdi, Nigeria.
M. I. Yusufu
Department of Food Science and Technology, Federal Polytechnic, Idah, Nigeria.
*Author to whom correspondence should be addressed.
Abstract
Aim: To evaluate the functional, proximate and anti-nutrient content of flour blends and sensory properties of bread produced from blends.
Methodology: Flour was prepared from whole wheat (WW), red kidney bean (RKB) and coconut fruit (CF). It was than blend as follows: S1 (100% refined wheat), S2 (100% WW), S3 (90% WW, 5% RKB and 5% CF), S4 (85% WW, 10% RKB and 5% CF), S5 (80% WW, 15% RKB and 5% CF), S6 (75% WW, 20% RKB and 5% CF). Blends were subjected to functional, proximate and anti nutrient content analyses. Also the sensory attributes of breads produced from blends were determined.
Results: Water absorption, oil absorption, swelling, foaming, foaming stability and emulsification capacity increased respectively from 0.62±0.06g/ml (S1) to 0.92±0.01 g/ml (S6), 0.96±0.02g/ml (S1) to 1.42±0.03 g/ml (S6), 1.05±0.01 (S1) to 1.73±0.01 (S6), 11.47±0.02% (S1) to 13.20±0.05% (S6), 50.93±0.01% (S1) to 53.47±0.01% (S6), 41.43±0.03% (S1) to 43.36±0.01% (S6) while bulk density decreased from 0.84±0.01g/ml (S1) to 0.60±0.02g/ml (S6). Moisture, ash, fat, fiber, and protein content increased respectively from 12.23±0.03% (S1) to 13.44±0.01% (S6), 0.66±0.01% (S1) to 1.66±0.02% (S6), 0.22±0.3% (S1) to 2.57±0.01% (S6), 0.67±0.26% (S1) to 4.34±0.02% (S6), 10.70±0.12% (S1) to 13.06±0.03% (S6) while carbohydrate decreased from 75.52±0.33% (S1) to 64.93±0.04% (S6). Phytate, oxalate and tannins content increased respectively from 0.03±0.00mg/100g (S1) to 1.09±0.01mg/100g (S6), 0.02±0.02mg/100g (S1) to 0.14±0.01mg/100g (S6), 0.01±0.01mg/100g (S1) to 0.09±0.01mg/100g (S6). In term of overall acceptability sample S1 and S3 showed no significantly different (p > 0.05).
Conclusion: Addition of red kidney beans and coconut flour into whole wheat had significant (P<0.05) impact on the functional, proximate characteristic of flour. There sensory scores showed S3 to be suitable for bread.
Keywords: Anti-nutrients, blends, flour, functional, proximate