Determination of the best Shelling Efficiency, Speed and Moisture Content for three varieties of Bambara Groundnut (Sb1-1 “Mumuye”, Ashemkungu or Shangedubu” and Soyabin) using the Bambara Groundnut Shelling Machine.

This study investigates the optimal shelling efficiency, speed, and moisture content for three varieties of Bambara groundnut (Vigna subterranea)—SB1-1 “Mumuye,” “Ashemkungu” or “Shangedubu,” and “Soyabin”—using a mechanical shelling machine. Given the crop's nutritional value and adaptability to sub-Saharan Africa's challenging agro-ecological conditions, efficient post-harvest processing is crucial for maximizing its economic potential. The research systematically evaluates the impact of varying moisture levels (8-10%, 12-14%, and 16-18%) and machine speeds (250, 275, and 300 RPM) on shelling performance. Results indicate that the best shelling efficiency for the Ashemkungu variety was achieved at 250 RPM with 5% moisture content, while the Soyabin variety performed optimally at 275 RPM with 7% moisture content. The Mumuye variety also showed high efficiency at 275 RPM with 7% moisture content. The findings highlight the critical role of moisture content in shelling efficiency, with higher moisture levels leading to increased seed damage. This study provides valuable insights for optimizing mechanical shelling practices, ultimately enhancing the economic viability of Bambara groundnut production and contributing to food security in the region. Recommendations include tailored shelling practices, effective moisture management, training for farmers, further research on additional variables, and policy support for mechanical shelling technologies.