Authors: Thiruppathi, S., D. Jayas, N.D.G. White, and P.G. Fields
Identifier: CSBE13121
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Published in: CSBE-SCGAB Technical Conferences » AGM Saskatoon 2013

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Description: Ochratoxin A (OTA) is a toxin produced by the fungus Penicillium verrucosum in cereal grains. Ochratoxin A is potentially carcinogenic, immunosuppressive, hepatotoxic, mutagenic, nephrotoxic, and teratogenic. The detection of contaminated grains as rapidly as possible and with high accuracy is very important to avoid potential Food and bioprocessingsafety issues. A near-infrared hyperspectral imaging system has the potential to differentiate the OTA contaminated grains from healthy grains within a short period of time. The Canada Western Red Spring wheat grains were artificially contaminated by P. verrucosum and analyzed for OTA. Then two different levels of OTA and OTA-free kernels were chosen and subjected to single-kernel imaging using a near-infrared camera in the wavelength range of 1000 to 1600 nm at 60 wavelengths spaced 10 nm apart. The statistical features from the images were obtained using a code written in MATLAB and were classified using linear and quadratic statistical classifiers. The classifiers provided a maximum classification accuracy of 99% for healthy vs. OTA contaminated samples and a misclassification of 20 % for the two levels of OTA contaminated samples.

Keywords: Near-Infrared Hyperspectral Imaging, Ochratoxin A, Statistical classifiers
Citation: Thiruppathi, S., D. Jayas, N.D.G. White, and P.G. Fields. 2013. Detection of Ochratoxin A in Wheat using Near-Infrared Hyperspectral Imaging. CSBE/SCGAB 2013 Annual Conference, University of Saskatchewan, Saskatoon, SK, 7-10 July 2013.
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Date: 2013-07-07
Technical field: Bioprocess Systems Engineering
Conference name: CSBE/SCGAB 2013 Annual Conference, University of Saskatchewan, Saskatoon, SK, 7-10 July 2013.
Session name: Biofuels, Anaerobic Digestion, Quality Assessment

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Type: Text.Article
Format: PDF
Publication type: Technical conference
Coverage: Canada
Language 1: en
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Rights: Canadian Society for Bioengineering
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