Design and Development of Milling Machine for the Production of Adlai (Coix lacryma jobi L) Grains

The developed prototype was mainly designed for the production of Adlai grains. The purpose of the study was to construct a machine that could help farmers in milling the Adlai seeds (Pulot and Kiboa) for an immediate production of adlai grains. Parameters were considered such as size, water content, hardness and density to determine its effect in the milling process of Adlai. Moreover, Kiboa seed that showed a higher value in analysis of hardness, water content and density which was 6.87%, 11.69% and 566.37g/cm3 respectively produced a higher yield in production than Pulot variety which exhibit only 9.42%, 11.25% and 476.25 g/cm3 respectively. A comparative study was conducted with a commercial milling machine to test its efficiency in terms of machine productivity. The result showed that Adlai milling machine could mill 57% in 2 min 37 sec for Kiboa and 45% in 2 min 38 sec for Pulot while rice miller machine milled 54% in 4 min 28 sec for Kiboa and 46% in 3 min 11 sec for Pulot. The average percentage yields of both machines are comparable to each other. Based on the statistical treatment conducted, there was no significant difference between the Adlai miller and commercial rice miller in terms of yield and operation time. However, the operation time used as data for rice miller was attained after the seed was reprocessed. Therefore the developed prototype was more applicable in the production of Adlai grains.

Keywords: Adlai Milling Machine, Rice Miller, Adlai, Pulot, Kiboa