title: Simultaneous determination of masked deoxynivalenol and some important type B trichothecenes in Chinese corn kernels and corn-based products by ultra-performance liquid chromatography-tandem mass spectrometry.
abstract: A total of 969 corn kernels and corn-based products collected from 24 provinces in China between 2008 and 2011 were analyzed for deoxynivalenol, deoxynivalenol 3-glucoside, 3-acetyl-deoxynivalenol, and 15-acetyl-deoxynivalenol by ultraperformance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). Deoxynivalenol was the predominant mycotoxin detected. A total of 29 out of 969 samples (corn kernels: 9/289, mean = 1884 μg/kg; corn-based products: 20/680, mean = 1580 μg/kg) contain deoxynivalenol at the levels exceeding the Chinese regulatory limit of 1000 μg/kg for deoxynivalenol in corn. The average relative concentration ratios (%) for deoxynivalenol 3-glucoside/deoxynivalenol for all four years were 25% ± 5% in corn kernels and 34% ± 4% in corn-based products. The results of this study indicate that it is necessary to include deoxynivalenol 3-glucoside in both risk assessment of deoxynivalenol and its derivatives and development of the tolerance limit for deoxynivalenol in Chinese corn kernels and corn-based products.
authors.affiliation: Key Laboratory of Food Safety Risk Assessment, Ministry of Health, China National Center for Food Safety Risk Assessment, No. 7 Panjiayuan Nanli, Chaoyang District, Beijing 100021, PR China.
authors.forename: Wang
authors.initials: W
authors.lastname: Wei
authors.forename: Ma
authors.initials: M
authors.lastname: Jiao-Jie
authors.forename: Yu
authors.initials: Y
authors.lastname: Chuan-Chuan
authors.forename: Lin
authors.initials: L
authors.lastname: Xiao-Hui
authors.forename: Jiang
authors.initials: J
authors.lastname: Hong-Ru
authors.forename: Shao
authors.initials: S
authors.lastname: Bing
authors.forename: Li
authors.initials: L
authors.lastname: Feng-Qin
mesh_terms: D002681:China; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D005506:Food Contamination / Q000032:analysis*; D012639:Seeds / Q000737:chemistry; D053719:Tandem Mass Spectrometry / Q000379:methods*; D014255:Trichothecenes / Q000032:analysis*; D003313:Zea mays / Q000737:chemistry*
chemical_list: D014255:Trichothecenes; C007262:deoxynivalenol