Optical characterization of free-falling mold-damaged wheat kernels

Stephen R. Delwiche

doi:10.1117/12.735662

26 September 2007 Optical characterization of free-falling mold-damaged wheat kernels

Stephen R. Delwiche

Proceedings Volume 6761, Optics for Natural Resources, Agriculture, and Foods II; 67610G (2007) https://doi.org/10.1117/12.735662
Event: Optics East, 2007, Boston, MA, United States

Abstract

One of the most common molds that infects the seeds of small cereals worldwide, such as wheat, is Fusarium Head Blight (FHB). The mycotoxin, deoxynivalenol (also known as DON or vomitoxin) is often produced by this mold, which, upon ingestion, causes health problems to not only livestock (especially non-ruminants), but to humans as well. In the United States, the FDA has established advisory levels for DON in food and feeds, a practice that is likewise conducted by most countries of the world. Our previous research has shown that commercial high-speed optical sorters are on average 50 percent efficient at the removal of mold-damaged kernels; however, under more careful control in the laboratory, this efficiency can rise to 95 percent or better. Ongoing research is examining the potential to achieve the higher efficiencies at conditions that are more akin to those of commercial processing. For example, multispectral information is collected on single kernels in freefall at the sub-millisecond level. Knowledge gained from this research will provide design criteria for improvement of high-speed optical sorters for reduction of DON in raw cereals commodities, as well as in finished food products.

Citation Download Citation

Stephen R. Delwiche "Optical characterization of free-falling mold-damaged wheat kernels", Proc. SPIE 6761, Optics for Natural Resources, Agriculture, and Foods II, 67610G (26 September 2007); https://doi.org/10.1117/12.735662

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