Research note: Utilization of Highly Deoxynivalenol-contaminated Wheat Via Extrusion Processing

摘要

Deoxynivalenol (DON) is toxic natural metabolite produced by Fusarium graminearum. In this study we investigated the effects of sodium bisuflite and extrusion cooking under high temperature and pressure on DON levels in wheat grain and mill fractions. Samples of highly naturally DON-contaminated soft winter wheat were soaked for 1 h water or aqueous sodium bisulfite (SB) solutions (0.5, 1.5, 2.5, or 5/100 SO_2 equivalent) and extruded. The soaking treatment with SB solution (5/100 SO_2 equivalent) lowered DON from 7.3 μg/g to 0.8 μg/g without extrusion and to 0.3 μg/g with an extrusion process.