Cowpea is a vital crop vegetable commonly consumed across the world due to its nutritional and economic significance. Despite its benefits, post-harvest mechanical dehulling process, particularly the removal of seed coats, remains a challenge in many regions due to grain variability. Therefore, mechanical methods often result in grain breakage, reduced processing yield, and compromised product quality. This research aims to develop and optimize a mechanical dehulling system specifically designed for efficient dehulling of cowpea while preserving the structural integrity of the grain.

The study will involve the design, fabrication, and testing of a dehulling machine, followed by a systematic evaluation of key operational parameters such as rotational speed, clearance settings, moisture content, and feed rate. Experimental optimization techniques (Response Surface Methodology) will be applied to determine the best combination of these variables for effective hull removal and minimal grain damage. Multiple cowpea varieties will be tested to assess the machine's adaptability to diverse seed characteristics.

Expected outcomes include an improved dehulling process with higher efficiency, reduced grain fragmentation, and increased whole grain recovery. The findings will contribute to the development of appropriate processing technologies that enhance post-harvest quality, reduce food losses, and support small- and medium-scale agricultural enterprises. Ultimately, the research seeks to bridge the gap between traditional dehulling practices and modern, scalable solutions.

Keywords: Post-harvest technology, Food processing, Mechanical design, Agricultural innovation