【摘要】 小麦经粒径分选和重力分选后,得到不同千粒重的样品,应用超高液相色谱串联质谱法对分选后样品的DON毒素含量进行分析。结果表明:30个样品的DON含量之间差异显著(P<0.001);在同一粒径区间,小麦的DON含量与千粒重呈显著负相关,在2.2~2.4、2.4~2.6、3.0~3.2和>3.2 mm粒径区间,小麦DON含量随千粒重的增加呈线性函数减少;在2.6~2.8和2.8~3.0 mm粒径区间,小麦DON含量随千粒重的增加呈幂函数减少。去除13.03%废弃物和DON含量较高的颗粒,得到的86.97%小麦中DON总量低于原样68.94%。更多还原

【Abstract】 Particle- size and specific gravity separation have been performed in wheat. Samples of different thousand- grain weight have been obtained. Ultra- high- performance liquid chromatography- tandem mass spectrometry has been applied to analyze the level of DON in samples through separation. The results showed that DON level of 30 samples had siginificant differences( P < 0. 001). The level of DON showed a negative linear correlation with the thousand- grain weight in the grain diameter of 2. 2 ~ 2. 4,2. 4 ~ 2. 6,3. 0 ~ 3. 2 or > 3. 2 mm particle size intervals. While it showed a negative power function relationship in the grain diameter of 2. 6 ~ 2. 8 and 2. 8 ~ 3. 0mm particle size intervals respectively. After 13. 03% of rejected material and high- level DON material were removed,86. 97% of safe edible wheat was obtained with a decrease of 68. 94% in total DON compared with the level in the original samples.更多还原