Objective To establish the method for determination of conjugated deoxynivalenol (DON) content in wheat by high performance liquid chromatograph (HPLC) after hydrolysis with trifluoromethanesulfonic acid (TFMSA). Methods The optimum conditions for hydrolysis of conjugated DON with TFMSA were set up by an orthogonal design, in which temperature was 60 ℃, TFMSA was 1.0 mol/L and duration of hydrolysis was 60 min, respectively. Results Conjugated DON contents in 7 wheat samples were analyzed, and 5 samples were found containing conjugated DON with their ratios to free DON varying from 0.20 to 0.36. Conclusion The method was of good reliability and practicality.
标题:三氟甲烷磺酸水解-HPLC法测定小麦中结合态脱氧雪腐镰刀菌烯醇
英文标题:Determination of conjugated deoxynivalenol content in wheat by HPLC after hydrolysis with trifluoromethanesulfonic acid