Maize primary processing includes cleaning, hulling, removing root and cap, grinding, grading, polishing and selecting, during which grits and flour are extracted. Maize flour is at about 50-70 mesh, smaller than wheat flour and it can be made into maize jelly, cake, bread, noddles, dumplings, etc.
Maize fine and deep processing is widely used in food, chemistry, fermentation, medicine, textile and paper making industry. Spike-stalk can be produced into furfural. During the process, it can produce maize starch, syrup and oil.
Maize plays a significant role in producing starch. Most starch is made of maize in the world. Processing technology has won a wide focus. Particular in developed countries, maize starch processing has become an important industry.