Abstract
建立了测定小麦中B型单端孢酶烯族毒素脱氧雪腐镰刀菌烯醇(deoxynivalenol, DON)、3-乙酰脱氧雪腐镰刀菌烯醇(3-acetyldeoxynivalenol, 3-ACDON)和15-乙酰脱氧雪腐镰刀菌烯醇(15-acetyldeoxyni-valenol, 15-ACDON)的高效液相色谱-紫外(HPLC-UV)检测方法。用水提取小麦样品,提取液经无水乙醇等体积沉淀,再结合Oasis HLB固相萃取小柱可取得较好的净化效果。采用乙腈/0.005%磷酸水溶液二元梯度洗脱程序在高效液相色谱-紫外检测器上完成DON、15ACDON和3ACDON的定性定量分析。结果表明,在0.5~15.0 mg L -1 线性范围内,DON、15ACDON和3ACDON的平均加标回收率分别为89.8%、93.4%和92.9%,相对标准偏差分别为2.2%、2.0%和2.5% ( n =3);检测限分别为12.2、10.5和16.7 μg kg -1 。该方法准确、重现性好,样品净化方法使杂峰干扰少,大幅减少有机溶剂的使用,成本低,适用于小麦中B型单端孢酶烯族毒素的大批量检测。
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