Product Development and Quality Evaluation of Biscuit and Ready-to-Eat Snack from Cowpea-wheat Flour Blends

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Authors

  • Moges Yilma Department of Food Process Engineering,Wolkite University,Wolkite, Ethiopia
  • Shimelis Admassu Food Engineering Graduate Program, School of Chemical and Bio-Engineering, Addis Ababa University, Addis Ababa Institute of Technology, Addis Ababa, Ethiopia

DOI:

https://doi.org/10.17140/aftnsoj-5-161

Keywords:

Biscuit, Cowpea, D-optimal mixture, Extrudate products, Wheat

Abstract

Aim

The research was conducted with the aim to develop biscuit and ready-to-eat snack product from cowpea flour incorporated with wheat flour.

Methods

The wheat and cowpea flour blends were prepared in five blending ratios including B1 (90:10), B2 (40:60), B3 (65:35), B4 (78:22), and B5 (53:47); respectively. The D-optimal mixture design software was used for flour blend formulation. Biscuit and extrudate products from cowpea and wheat blends were analyzed. Quality characteristics parameter used for value-added products includes physical, functional, proximate, mineral and microbial quality. Furthermore, bioactive components and sensory quality evaluation were also investigated. The biscuit samples were prepared at a baking temperature of 205 °C for 10-minutes holding time. The extrudate samples were also manufactured at feed moisture (18 and 21%), barrel temperature (100, 110 and 120 °C) and screw speed (175 and 220 rpm).

Results

The result for crude protein analysis of biscuit (B3) and extrudate (Ex-3) samples was revealed that 15.972±0.125, and 15.915±0.251; respectively. The result for microbial quality analysis of biscuit (B3) and extrudate (Ex-3) samples was also shown as aerobic bacteria count of 44×10-5, 42×10-5 and yeast and mold (un-detected); respectively. The highest overall sensory evaluation of biscuit (B3) and extrudate (Ex-3) samples score were found 7.6 and 7.14; respectively.

Conclusion

Based on quality evaluation parameters, 35% cowpea flour with 65% of wheat flour blending ratio reveled sensor acceptable for biscuit production and manufacturing of ready-to-eat snack.

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Published

2019-11-01

How to Cite

Moges Yilma, & Shimelis Admassu. (2019). Product Development and Quality Evaluation of Biscuit and Ready-to-Eat Snack from Cowpea-wheat Flour Blends. Advances in Food Technology and Nutrition Sciences, 5(3), 92–106. https://doi.org/10.17140/aftnsoj-5-161