本研究通过煮制水中加入碳酸钠分析被污染挂面中DON毒素的去除作用。首先确定了加碱量对熟挂面品质的影响并分析了微波炉、电磁炉煮制挂面对DON去除效果的影响，研究结果表明：煮制水中添加0.25%碳酸钠对熟挂面品质无显著不良影响，并增加了DON毒素的去除效果；微波煮制挂面对DON毒素的去除率优于电磁炉煮制，但效果不显著。其次，以不同污染浓度的挂面进行0.25%碳酸钠煮制，获得DON毒素去除效果的预测曲线：y=0.4546x-0.0377，R2=0.9605，通过曲线可知，加碱煮制挂面可将DON毒素含量由2.30 mg/kg降至国家标准（1 mg/kg），显著优于无碱条件下煮制对DON毒素的去除效果。在此基础上，借助四极杆-飞行时间串联质谱仪（Q-TOF）分析0.20%碳酸钠条件下DON毒素标准品的降解产物，发现可能存在的降解产物为C15H20O6（isoDON, lactone DON）、C15H20O5（norDON D）、C14H18O5（norDON A, B, C），其产物毒性显著降低。利用0.25%碳酸钠煮制挂面具有较好的DON毒素降毒作用。

This study investigated the removal of the contaminant deoxynivalenol (DON) from dried noodles by cooking them in alkalinized water. First, the effect of added sodium carbonate on the quality of cooked noodles was determined. Additionally, the effects of using a microwave oven and induction cooker on the removal of DON from cooked noodles were analyzed. The results showed that 0.25% sodium carbonate solution had no significant effect on noodle quality. However, it increased the efficiency of DON removal. Moreover, the efficiency of DON removal by cooking noodles by using a microwave oven was higher than that using an induction cooker, though the difference was not significant. Second, dried noodles with different levels of DON contamination were cooked in 0.25% sodium carbonate solution and a prediction curve for DON removal was obtained: y = 0.4546x - 0.0377, R2 = 0.9605. The results showed that addition of sodium carbonate reduced DON content from 2.30 mg/kg to 1000 mg/kg (the national upper limit for DON in China). This removal efficiency was significantly higher than that without adding sodium carbonate. Furthermore, the degradation products of DON standard in 0.20% sodium carbonate solution were analyzed using a quadrupole time-of-flight mass spectrometry (Q-TOF) system. The possible degradation products of DON were C15H20O6 (isoDON, lactone DON), C15H20O5 (norDON D), and C14H18O5 (norDON A, B, C). The toxicity of the products was significant reduced. Thus, cooking dried noodles in 0.25% sodium carbonate solution showed good DON removal efficiency.

国家科技支撑计划（2012BAD29B03）；公益性行业（农业）科研专项（201203037）