Occurrence of pre- and postharvest multi-mycotoxins in durum wheat grains collected in 2020 and 2021 in two climatic regions of Tunisia

Aloui Amina, Ben Salah-Abbès Jalila, Zinedine Abdellah, Meile Jean-Christophe, Riba Amar, Durand Noël, Montet Didier, Abbès Samir, Brabet Catherine. 2023. Occurrence of pre- and postharvest multi-mycotoxins in durum wheat grains collected in 2020 and 2021 in two climatic regions of Tunisia. Food Additives and Contaminants. Part B, Surveillance, 16 (3) : 274-287.

Résumé : Twenty two mycotoxins in 136 durum wheat collected from Tunisia in 2020 and 2021 were investigated. Mycotoxins were analyzed by UHPLCMS/MS. In 2020, 60.9% of the samples were contaminated with Aflatoxin B1 (AFB1) and/or enniatin. Whereas, in 2021, 34.4% were contaminated by enniatins. AFB1 was detected only in 2020, in the continental region (6/46) and all samples exceeded limits. AFB1 was detected in stored wheat (24-37.8 µg/kg) but also in pre-stored wheat (17-28.4 µg/kg) and in one sample collected in the field (21 µg/kg). Enniatin A1, enniatin B and enniatin B1 were detected in wheat collected in the field (30-7684 µg/kg), pre-storage (42-1266 µg/kg) and storage (65.8-498.2 µg/kg) from the continental region also, in sample collected in pre-storage (31.3-1410 µg/kg) and at harvest (48- 1060 µg/kg). Samples had a water activity less than 0.7 and moisture content ranged between 09-14%. AFB1 level represent a health risk to the Tunisian consumers.

Mots-clés Agrovoc : mycotoxine, contamination des aliments, contamination biologique, Triticum durum, blé dur

Mots-clés géographiques Agrovoc : Tunisie

Mots-clés libres : Mycotoxins, Wheat, Co-occurrence, LC-MS/MS, Tunisia

Classification Agris : Q03 - Contamination et toxicologie alimentaires
S50 - Santé humaine

Champ stratégique Cirad : CTS 3 (2019-) - Systèmes alimentaires

Agences de financement hors UE : Tunisian Ministry of Higher Education and Scientific Research, Centre de Coopération Internationale en Recherche Agronomique pour le Développement

Auteurs et affiliations

• Aloui Amina, CIRAD-PERSYST-UMR Qualisud (FRA)
• Ben Salah-Abbès Jalila, University of Monastir (TUN)
• Zinedine Abdellah, Chouaib Doukkali University (MAR)
• Meile Jean-Christophe, CIRAD-PERSYST-UMR Qualisud (FRA) ORCID: 0000-0002-6747-2104
• Riba Amar, Ecole Normale Supérieure de Kouba (DZA)
• Durand Noël, CIRAD-PERSYST-UMR Qualisud (FRA) ORCID: 0000-0003-1627-6848
• Montet Didier, CIRAD-PERSYST-UMR Qualisud (FRA)
• Abbès Samir, University of Monastir (TUN) - auteur correspondant
• Brabet Catherine, CIRAD-PERSYST-UMR Qualisud (REU)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/605295/)

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