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Corn Harvest Quality Report 2011/2012

Contents

  1. Survey Overview
  2. Grade Factors
  3. Chemical Composition
  4. Physical Factors
  5. Mycotoxins
  6. Crop and Weather Conditions
  7. U.S. Corn Production, Usage, and Outlook
  8. U.S Corn Use and Ending Stocks
  9. Outlook
  10. Survey and Statistical Analysis Methods
  11. Statistcal Analysis
  12. Testing Analysis Methods
  13. Corn Grading Factors
  14. Chemical Composition
  15. Physical Factors
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Chemical Composition

NIR Proximate Analysis – Corn

Proximates are the major components of the grain. For corn, the NIR Proximate Analysis includes Oil Content, Protein Content, and Starch Content (or Total Starch). This procedure is nondestructive to the corn. Chemical composition tests for protein, oil, and starch were conducted using a 400–450 g sample in a whole-kernel Foss Infratec 1229 Near-Infrared Transmittance (NIT) instrument. The NIT was calibrated to chemical tests and the standard error of predictions for protein, oil, and starch were about 0.2%, 0.3%, and 0.5%, respectively. Results are reported on a dry basis percentage (percent of nonwater material).