• DOI:10.1094/CCHEM.2004.81.4.490
• Corpus ID: 42904890

Reduction of Aflatoxin and Fumonisin Contamination in Yellow Corn by High‐Speed Dual‐Wavelength Sorting

@article{Pearson2004ReductionOA,
  title={Reduction of Aflatoxin and Fumonisin Contamination in Yellow Corn by High‐Speed Dual‐Wavelength Sorting},
  author={Tom C. Pearson and Donald T. Wicklow and Melchor C. Pasikatan},
  journal={Cereal Chemistry},
  year={2004},
  volume={81},
  pages={490-498}
}

• T. Pearson, D. Wicklow, M. C. Pasikatan
• Published 1 July 2004
• Chemistry
• Cereal Chemistry

ABSTRACT A high-speed dual-wavelength sorter was tested for removing corn contaminated in the field with aflatoxin and fumonisin. To achieve accurate sorting, single kernel reflectance spectra (500–1,700 nm) were analyzed to select the optimal pair of optical filters to detect mycotoxin-contaminated corn during high-speed sorting. A routine, based on discriminant analysis, was developed to select the two absorbance bands in the spectra that would give the greatest classification accuracy. In a laboratory setting, and with the kernels stationary, absorbances at 750 and 1,200 nm could correctly identify >99% of the kernels as aflatoxin-contaminated (>100 ppb) or uncontaminated. A high-speed sorter was tested using the selected filter pair for corn samples inoculated with Aspergillus flavus; naturally infested corn grown in central Illinois; and naturally infested, commercially grown and harvested corn from eastern Kansas (2002 harvest). For the Kansas corn, the sorter was able to reduce aflatoxin levels by ...