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United States Department of Agriculture

Agricultural Research Service

Title: Mid-Infrared Analyses of Corn

Authors
item Jones, Roger - AMES LABORATORY/USDOE
item Mcclelland, John - AMES LABORATORY/USDOE
item Gordon, Sherald
item Greene, Richard

Submitted to: Corn Dry Milling Conference Proceedings
Publication Type: Proceedings
Publication Acceptance Date: May 13, 1997
Publication Date: N/A

Technical Abstract: The utility of near-infrared spectroscopy (NIRS) for analyses of agricultural commodities is well documented. Absorption patterns observed in the near-infrared region, however, arise from overtones of primary, mid-infrared absorbances. Mid-infrared absorbances are very distinct and, unlike their near-infrared counterparts, can often be assigned to specific chemical moieties. While the fundamental information provided by mid-infrared absorption patterns is very powerful, obtaining a signal in this region from a solid material, such as corn, is a challenge. Several techniques recently have been developed which provide suitable mid-infrared spectra from solids, two of which (Photoacoustic Spectroscopy and Transient Infrared Spectroscopy) are further discussed.

Last Modified: 12/19/2014
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