Design, Testing and Evaluation of Mobile Corn Mill for Village-Level Operation in the Philippines

Michael A. Gragasin, Irwin V. Salapare, Jayvee P Illustrisimo, Romualdo C. Martinez


The efficiency and availability of corn mills operating in the Philippines play a vital role in achieving food self-sufficiency in the entire country.   Majority of operational corn mills are situated along the highway where three-phase electrical line is available. Current design of operational corn mills still utilizes emery stone for its degermination process, two-steel rollers for its milling process and oscillating sifter that all require huge amount of power. The purpose of this research was to develop a technically viable and financially feasible new type of mobile corn mill that can be used in the countryside particularly in the remote areas. The developed corn mill system is comprised of the degerminator, rotary mill, rotary grader and equipped with a pre-cleaner (destoner and winnower), two elevators and a suction blower.  It is powered by 60 HP, 4-cylinder diesel engine.   Performance test results revealed that the developed mobile corn mill has an input capacity of 940 - 1,100  kg/h with product recovery of 66-71 % and degerminator efficiency of 82-88 %.  Cost of milling is estimated at Php0.86 per kg output.  The estimated cost of the developed corn mill is Php850,000 per unit (US$1=Php50).  The developed corn mill technology can be used by farmer cooperatives and local entrepreneurs that will engage in custom-milling business and the processing of corn for food and animal feeds.


Zea mays; Corn Mill; Agricultural Machinery; Corn Processing

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DA-Corn Program. Corn Industry Development Roadmap. Department of Agriculture, Republic of the Philippines, 2014.

M.A. Gragasin and R.C. Martinez. Development of Corn Mill for Village-Level of Operation, Asian Journal of Applied Sciences, 3(6), pp. 896-904, 2015.

G. Boumans. “Developments in Agricultural Engineering 4: Grain Handling and Storageâ€. New York, USA: Elsevier, 2012.

M.A. Gragasin and R.C. Martinez. Pilot-Testing of Developed Village-Level Compact Corn Mill in the Philippines. ARPN Journal of Engineering and applied Sciences, 12(1), pp. 83-88, January 2017.

F.R. Earle, J.J. Curtis and J.E. Hubbard. Composition of the Component Parts of the Corn Kernel, Cereal Chemistry, vol. 23, pp.504-511, 1946.

“Philippine Agricultural Engineering Standard Specification for Corn Mill (PAES 210:2000)â€, Agricultural Machinery Testing and Evaluation Center, University of the Philippines at Los Banos, Laguna, Philippines, 2001.

“Selected Statistics on Agriculture (ISSN 2012-0362), Philippine Statistics Authority, Republic of the Philippines, 2015.

DA-BAFS, “Philippine National Standards for Shelled Corn (PNS/BAFS 10:204)â€, Bureau of Agriculture and Fisheries and Product Standard, Department of Agriculture, Philippines, 2014.

“Summary of Evaluation Report on Village-Type Corn Millâ€, Agricultural Machinery Testing and Evaluation Center (AMTEC), University of the Philippines, 2011.

O.L. Brekke, E. Griffin Jr. and P. Brooks . Dry-milling of Opaque-2 Corn. Cereal Chemistry, 48, pp. 499-511, 1991.

A.J. Peplinski, R.A. Anderson and F.B. Alaksiewicz. Corn Dry-milling Studies: Shortened Mill Flow and Reduced Temper Time and Moisture. Cereal Chemistry, vol. 61(1), pp.60-62, 1984.

“Philippine Agricultural Engineering Standard Method of Test for Corn (PAES 211:2000)â€, Agricultural Machinery Testing and Evaluation Center, University of the Philippines at Los Banos, Laguna, Philippines, 2001.

J.C. Hartman and I.C. Schafrick. The Relevant Internal Rate of Return. The Engineering Economist, 49(2), pp. 139–158, 2004.

M.A. Gragasin and R.C. Martinez. Design and testing of improved village-type dehuller-degerminator for dry-milling process of corn. International Journal of Engineering and Advance Technology, 5(1), pp. 121-126, 2015.

K.R. Bhattacharya and S. Z. Ali. “An Introduction to Rice-Grain Technology. Woodhead Publishing India, 2015.

K. Koch. “Hammer Mills and Roller Millsâ€. MF-2018 Feed Manufacturing, Department of Grain Science and Industry, Kansas State University, 2002.



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