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Mycotoxin reduction in wheat grains

Identification

Key words Mycotoxin, fungi, deoxynivalenol (DON), peripheral tissues, milling, debranning, dehulling, contamination, wheat, sorting
Latest version 2012/11/27
Completed by INRA - IATE

How does it work?

Primary objective reduce mycotoxin contamination in wheat lots
Working principle This method showed that:

- during the milling processes, the deoxynivalenol (DON) is concentrated in both the fractions corresponding to the most peripheral tissues and the finest particles generated from the operating units

- the content of both the fungus (Fusarium type) and its product, the mycotoxin (DON), appears to decrease around the aleurone layer (probably next to the testa-aleurone border). Consequently, it is highly suggested to choose debranning/dehulling over milling to reduce DON level in the products.

Due to an effective reduction of grain mass by grain processing using debranning methods, the mycotoxin will be removed

Images
Additional effects
Important process parameters It is highly suggested to choose debranning/dehulling over milling. Milling would increase the contact between the contaminated tissues and the flour, resulting in a contaminated product.
Important product parameters

What can it be used for?

Products Durum wheat, common wheat
Operations Grinding, milling, debranning/dehulling
Solutions for short comings Reduction of mycotoxins/contaminants

What can it NOT be used for?

Products any other product than wheat
Operations Other operations than separation (by grinding, milling, debranning/dehulling)
Other limitations The method does not allow to reach a 100% elimination rate
Risks or hazards

Implementation

Maturity This method has not been implemented on industrial scale yet.

It should be coupled with other mycotoxin reduction methods (such as grain size sorting, colour sorting, etc.)

Modularity /Implementation This technology should be applied prior to the conventional production line (i.e. before milling)
Consumer aspects Consumers will definitely benefit from higher reduction of the amount of potentially toxic molecules
Legal aspects The European law N°1881, 2006 describes the deoxynivalenol (DON) acceptable tresholds within several conditions:

Durum wheat 1750 µg.kg-1

Semolina, pasta 750 µg.kg-1

Common wheat 1250 µg.kg-1

Flour, bread 500 µg.kg-1

Infant food 200 µg.kg-1

(3)

Environmental aspects Debranning/dehulling is an energy consuming process

Further Information

Institutes INRA - IATE, INRA - MYCSA
Companies
References (1) Rios G., Pinson-Gadais L., Abecassis J., Zakhia-Rozis N. and Lullien-Pellerin V., 2009. Assessment of dehulling efinciency to reduce deoxynivalenol and Fusarium level in durum wheat grains. J cereal Sci. 49, 387-392

(2) Rios G., Zakhia-Rozis N., Chaurand M., Richard-Forget F., Samson M.F., Abecassis J., and Lullien-Pellerin V. 2009. Impact of durum wheat milling on deoxynivalenol distribution in the outcoming fractions. Food Additives and Contaminants. 26, 487-495

(3) Commission Regulation (EU) No 165/2010 of 26 February 2010 amending Regulation (EC) No 1881/2006 setting maximum levels for certain contaminants in foodstuffs as regards mycotoxins.

It is highly suggested to choose debranning/dehulling over milling. Milling would increase the contact between the contaminated tissues and the flour, resulting in a contaminated product.


2.1.3 physical, biological separation other Interviewing the researchers of UMR 1208 IATE (INRA, Montpellier, France): Joël Abecassis, Valérie Lullien-Pellerin PubMed (search terms: Mycotoxin AND deoxynivalenol AND wheat grain AND reduction) WikiSysop :Template:Review document :Template:Review status



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Created by Hte inra on 21 June 2011, at 10:19