Abstract
The occurrence of trichothecene toxins was determined in different kinds of wheat-based foods (convenience noodles, biscuits, bread and cakes) in Nanjing, China. A total of 74 commercially available samples were collected from the supermarkets in Nanjing from September 2006 to April 2007. Three trichothecenes named deoxynivalenol (DON), 3-acetyldeoxynivalenol (3ADON) and 15-acetyldeoxynivalenol (15ADON) were detected and quantified by gas chromatography with electron capture detection. The incidence of DON, 3ADON and 15ADON were 73.0, 8.1 and 23.0%, respectively, the content ranges were 0.07–11.38, 0.25–1.47 and 0.03–2.06 mg kg−1, respectively, and the average contents were 2.47, 0.71 and 0.48 mg kg−1 in positive samples, respectively. The average DON contents in convenience noodles, biscuits, bread and cakes were 2.36, 2.79, 1.86 and 0.62 mg kg−1, respectively. Thirty-seven of 74 samples contained more than 1 mg of DON per kilogram, which is the regulatory limit defined by the Chinese government.
Acknowledgement
The authors kindly thank Dr Hongmei Li from Department of Plant Pathology in Nanjing Agricultural University for English correction.
Notes
†Co-first authors.