Register |

Corn Processing


Corn Processing

CornThe Corn Processing industries produce many important food, industrial and chemical products from corn grain, and in the process produce many important by-products that have increasing nutritional and economic impact to our food supply.


There are two distinct techniques that are used to process corn:  wet milling and dry milling.

Wet milling processors generate pure corn starch, which has many food and industrial uses.  In addition, corn oil and many other by-products are produced.  A complete list of products and by-products from the wet millers along with possible end-uses includes:

Products End-Uses
Corn Starch Food, sweeteners and industrial uses for polymers, films etc.
Corn oil Food and industrial uses for lubrication
Corn germ meal Protein source for poultry and swine feeds
Corn gluten feed Protein and energy source for cattle, swine and poultry
Corn gluten meal High protein concentrate for poultry and cattle feed

Corn steep liquor

Liquid protein source for cattle feed and feed pellets

 Dry Milling processors produce starch for ethanol and other products, while valuable by-products for use in animal feeds.  The products and by-products from the dry millers along with possible end-uses includes:

Products End-Uses
Corn starch Ethanol production for fuel or sweeteners for beverages
Corn distillers solubles

Protein and energy source for animal feed

Distillers dried grains
with solubles (DDGs)
High protein and energy source for cattle, poultry, swine
and pet food production


Process Control Points

Well-controlled milling processes optimize the production of starch, meals and other products and enables the most efficient use of the by-products. Our Corn Processing Analyzer is ideal for every step in the corn milling process, including:

  • test incoming corn for moisture, protein, starch and other constituents
  • monitoring and controlling the quality of dry milling products such as grits, corn meals and corn flour
  • monitor and adjust the wet milling process to optimize the yield of starch
  • test and verify quality of corn gluten feed and meal
  • analyze DDGs, bran and other by-products for quality

Timely, accurate analytical data is critical to controlling the milling process and maximizing yield.  Frequent analysis of the by-products will ensure they meet the specified quality and reduce re-work and claims.  Unity NIR Corn Processing solutions provide these data in 30 seconds at-line, maximizing profits and resulting in very short payback times.

Learn more about analytical options for Corn Processors!