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ARS Home » Midwest Area » Peoria, Illinois » National Center for Agricultural Utilization Research » Plant Polymer Research » Research » Publications at this Location » Publication #81777
Title: MID-INFRARED ANALYSES OF CORN

Author
item JONES, ROGER - AMES LABORATORY/USDOE
item MCCLELLAND, JOHN - AMES LABORATORY/USDOE
item Gordon, Sherald
item Greene, Richard

Submitted to: Corn Dry Milling Conference
Publication Type: Proceedings
Publication Acceptance Date: 5/13/1997
Publication Date: N/A
Citation: N/A

Interpretive Summary:

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.