Abstract
Deoxynivalenol (DON) and T-2 toxin are major trichothecenes contaminated in cereals, which might bring harmful effects to humans. In this research, mixed anti-DON and anti-T-2 mAb were used for multiple immunoaffinity columns (mIACs) preparation. Under the optimal conditions, column capacities were tested at 1280 ng/mL for DON and 1160 ng/mL for T-2 toxin. Regeneration investigation showed mIACs capacities were over 510 ng/mL for DON and 440 ng/mL for T-2 toxin in 10 recycle usages. Good performances were obtained when applying mIACs purification coupled UHPLC-MS/MS for spiked samples with limit of detection at 3–13 μg/kg and mean recoveries at 79.0–97.6%. Applying to estimate the exposure of DON and T-2 toxin in commercial samples, maize samples were 100% DON positive and rice samples were 40% DON positive while T-2 toxin was negative in all tested samples. The proposed method is reliable and suitable for monitoring DON and T-2 toxin in cereal samples.
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