Authors: Alvin Alvarado, Analyn Asok, Don Vic Obaob, Maria Rosario Mosqueda, Heide Rabanes, Denise Beaulieu, Bernardo Predicala
Identifier: CSBE22241
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Published in: CSBE-SCGAB Technical Conferences » AGM Charlottetown 2022

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Description: Deoxynivalenol (DON) is one of the most significant mycotoxins in agriculture because it contaminates common feed grains, such as wheat, corn, oats and barley. DON, a toxic secondary metabolite produced by filamentous fungi, was detected in 85% of all grain samples and 90% of feed samples in North America. Contamination of DON in grains can cause adverse health issues in livestock and humans, as well as enormous economic losses in the agriculture industry. Nanotechnology has been used to treat contaminants in air, water and soil due to the well-documented antifungal and antibacterial properties of nanomaterials. Thus, the overall goal of this study is to mitigate DON contamination in wheat grains by adapting nanotechnology techniques. Based on a set of assessment criteria which includes previous similar applications, cost-effectiveness, safety, and availability, three candidate nanomaterials were identified and selected for testing: chitosan polymeric nanoparticles (CS), montmorillonite nanocomposites (MN), and magnetic graphene oxide (MGO). A series of sorption experiments were conducted to determine the most promising nanomaterials and optimize their operational requirements and appropriate application conditions for mitigating DON contamination in wheat grains. Results from completed three trials have shown that the application of MGO nanoparticles was the most promising strategy in counteracting the impact of DON in contaminated wheat grains. The effect of pH, temperature and contact time on the adsorption performance of these nanomaterials will be assessed further in subsequent trials. An adsorption isotherm will also be determined to provide insight into the adsorption mechanism of the nanomaterials.

Keywords: mycotoxin, deoxynivalenol, chitosan polymeric nanoparticles, montmorillonite nanocomposites, magnetic graphene oxide nanomaterials, wheat
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Date: 2022-07-24
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Conference name: CSBE/SCGAB 2022 Annual Conference, Charlottetow, PEI, 24-27 July 2022.
Session name: Agricultural Engineering5

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Type: Text.Abstract
Publication type: Presentation
Coverage: Canada
Language 1: en
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Rights: Canadian Society for Bioengineering
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