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Characteristics in composition of corn grain and plant decide the extensive use of corn value. Most of the world's corn productionis used in other ways and only one-third is directly is used for food.

First let's talk about the one third which is used for food. Corn is one of the most widely distributed food crops in the world; behind wheat and rice, its planting area is the third of the world. It is planted from northern latitude 58¡ãto southern latitude 40¡ã. There is corn mature every month in the world all year around. Being as America's most important food crops, corn production accounts for about half of world output, and about 2/5 for export. China's annual corn output is the second of the world, followed by Brazil, Mexico, and Argentina. Being as the world's most important food, today about a third of world population take corn as a major food, Asian food composition include corn for 50%, much more above 90%, and the Africa accounted for 25%, Latin America accounted for 40%. Corn has a better nutrition ingredient than the rice, potato, etc, the disadvantage is bulky grain, bad taste, particle viscous small, but with the development of corn processing industry, corn edible quality is being improved all the time and has formed many different kinds of corn food. Take corn flour and embryos powder for example. Corn contents higher fat, bad flavor can be provided during storage because of adipose oxidation. Then corn milling machinery will be useful, we can use corn milling machine to process corn grain into corn flour or embryos powder, through what oil content will be dropped below 1% and food quality will be improved. It is suitable to mix corn flour with wheat flour to make food. Due to the rich in protein, vitamin, and high nutritional value, it is great to eat by children and the elderly.

The demands for meat and poultry increased with the improvement of people's living standard, the animal husbandry industry also accelerate its development. Corn has become the important basis to develop animal husbandry and poultry raising because a large part of the world corn production is used for feed. Corn is, especially yellow corn grain is quite good feed, and pigs, cows, horses, chicken, goose, livestock can be directly feeded by corn grain. Use corn grain as feed directly has greatly reduced with the development of feed industry and mechanical industry, concentrated feed has a wide application. Flour Mill made from corn grain by feed pellet mill machine is much easier to preserve and store. Cornstalk is also good feed, especially for cattle. Fresh straw is succulent, has a high nutritional value, and after drying, it also can be make into pellet feed by using a pellet mill machine.

Finally orn occupies an important position in corn starch production in industry. Most of the world use corn as the raw material of corn starch production, especially the USA, completely takes corn for raw materials. Flour Mill Project technology has made dramatic development to adapt to the quality and quantity of corn starch requirements.