摘要
Wheat is an important cereal but it is often contaminated with mycotoxins. The natural occurrence of aflatoxin B-1 (AFB(1)) and sterigmatocystin (STC) was determined in 178 food samples (32 wheat samples and 146 wheat products) purchased from Chinese supermarkets. The methodology was validated, the wheat and wheat products samples were treated with a modified QuEChERS (quick, easy, cheap, effective, rugged, and safe) and quantified by liquid chromatography-tandem mass spectrometry (LC-MS/MS). From these samples 18.8% of wheat and 8.2% of cracker samples were contaminated with AFB(1). Mean levels were 0.06 mu g/kg and 0.05 mu g/kg, respectively. There was no AFB(1) contamination in white bread or whole meal bread. Meanwhile 53.1% of wheat, 59.2% of crackers, 20.8% of white bread and 16% of whole meal bread samples were contaminated with STC. The mean levels were 0.07, 0.79, 0.12 and 0.12 mu g/kg respectively. Although the levels were low, this demonstrates the need for more comprehensive surveys for these two mycotoxins in wheat and wheat products from China.
- 出版日期2018
- 单位广东食品药品职业学院; 广东省农业科学院; 中国农业大学