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Removal of Small Kernels Reduces the Content of Fusarium Mycotoxins in Oat Grain

Cereal grain contaminated by Fusarium mycotoxins is undesirable in food and feed because of the harmful health effects of the mycotoxins in humans and animals. Reduction of mycotoxin content in grain by cleaning and size sorting has mainly been studied in wheat. We investigated whether the removal o...

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Autores principales: Brodal, Guro, Aamot, Heidi Udnes, Almvik, Marit, Hofgaard, Ingerd Skow
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7291109/
https://www.ncbi.nlm.nih.gov/pubmed/32456124
http://dx.doi.org/10.3390/toxins12050346
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author Brodal, Guro
Aamot, Heidi Udnes
Almvik, Marit
Hofgaard, Ingerd Skow
author_facet Brodal, Guro
Aamot, Heidi Udnes
Almvik, Marit
Hofgaard, Ingerd Skow
author_sort Brodal, Guro
collection PubMed
description Cereal grain contaminated by Fusarium mycotoxins is undesirable in food and feed because of the harmful health effects of the mycotoxins in humans and animals. Reduction of mycotoxin content in grain by cleaning and size sorting has mainly been studied in wheat. We investigated whether the removal of small kernels by size sorting could be a method to reduce the content of mycotoxins in oat grain. Samples from 24 Norwegian mycotoxin-contaminated grain lots (14 from 2015 and 10 from 2018) were sorted by a laboratory sieve (sieve size 2.2 mm) into large and small kernel fractions and, in addition to unsorted grain samples, analyzed with LC-MS-MS for quantification of 10 mycotoxins. By removing the small kernel fraction (on average 15% and 21% of the weight of the samples from the two years, respectively), the mean concentrations of HT-2+T-2 toxins were reduced by 56% (from 745 to 328 µg/kg) in the 2015 samples and by 32% (from 178 to 121 µg/kg) in the 2018 samples. Deoxynivalenol (DON) was reduced by 24% (from 191 to 145 µg/kg) in the 2018 samples, and enniatin B (EnnB) by 44% (from 1059 to 594 µg/kg) in the 2015 samples. Despite low levels, our analyses showed a trend towards reduced content of DON, ADON, NIV, EnnA, EnnA1, EnnB1 and BEA after removing the small kernel fraction in samples from 2015. For several of the mycotoxins, the concentrations were considerably higher in the small kernel fraction compared to unsorted grain. Our results demonstrate that the level of mycotoxins in unprocessed oat grain can be reduced by removing small kernels. We assume that our study is the first report on the effect of size sorting on the content of enniatins (Enns), NIV and BEA in oat grains.
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spelling pubmed-72911092020-06-17 Removal of Small Kernels Reduces the Content of Fusarium Mycotoxins in Oat Grain Brodal, Guro Aamot, Heidi Udnes Almvik, Marit Hofgaard, Ingerd Skow Toxins (Basel) Article Cereal grain contaminated by Fusarium mycotoxins is undesirable in food and feed because of the harmful health effects of the mycotoxins in humans and animals. Reduction of mycotoxin content in grain by cleaning and size sorting has mainly been studied in wheat. We investigated whether the removal of small kernels by size sorting could be a method to reduce the content of mycotoxins in oat grain. Samples from 24 Norwegian mycotoxin-contaminated grain lots (14 from 2015 and 10 from 2018) were sorted by a laboratory sieve (sieve size 2.2 mm) into large and small kernel fractions and, in addition to unsorted grain samples, analyzed with LC-MS-MS for quantification of 10 mycotoxins. By removing the small kernel fraction (on average 15% and 21% of the weight of the samples from the two years, respectively), the mean concentrations of HT-2+T-2 toxins were reduced by 56% (from 745 to 328 µg/kg) in the 2015 samples and by 32% (from 178 to 121 µg/kg) in the 2018 samples. Deoxynivalenol (DON) was reduced by 24% (from 191 to 145 µg/kg) in the 2018 samples, and enniatin B (EnnB) by 44% (from 1059 to 594 µg/kg) in the 2015 samples. Despite low levels, our analyses showed a trend towards reduced content of DON, ADON, NIV, EnnA, EnnA1, EnnB1 and BEA after removing the small kernel fraction in samples from 2015. For several of the mycotoxins, the concentrations were considerably higher in the small kernel fraction compared to unsorted grain. Our results demonstrate that the level of mycotoxins in unprocessed oat grain can be reduced by removing small kernels. We assume that our study is the first report on the effect of size sorting on the content of enniatins (Enns), NIV and BEA in oat grains. MDPI 2020-05-23 /pmc/articles/PMC7291109/ /pubmed/32456124 http://dx.doi.org/10.3390/toxins12050346 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Brodal, Guro
Aamot, Heidi Udnes
Almvik, Marit
Hofgaard, Ingerd Skow
Removal of Small Kernels Reduces the Content of Fusarium Mycotoxins in Oat Grain
title Removal of Small Kernels Reduces the Content of Fusarium Mycotoxins in Oat Grain
title_full Removal of Small Kernels Reduces the Content of Fusarium Mycotoxins in Oat Grain
title_fullStr Removal of Small Kernels Reduces the Content of Fusarium Mycotoxins in Oat Grain
title_full_unstemmed Removal of Small Kernels Reduces the Content of Fusarium Mycotoxins in Oat Grain
title_short Removal of Small Kernels Reduces the Content of Fusarium Mycotoxins in Oat Grain
title_sort removal of small kernels reduces the content of fusarium mycotoxins in oat grain
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7291109/
https://www.ncbi.nlm.nih.gov/pubmed/32456124
http://dx.doi.org/10.3390/toxins12050346
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