Distribution and variation of fungi and major mycotoxins in pre- and post-nature drying maize in North China Plain

作者：Xing, Fuguo^*; Liu, Xiao; Wang, Limin; Selvaraj, Jonathan Nimal; Jin, Nuo; Wang, Yan; Zhao, Yueju; Liu, Yang^*

来源：Food Control, 2017, 80: 244-251.

DOI：10.1016/j.foodcont.2017.03.055

• Maize kernels
• Pre- and post-nature drying
• Fungi
• Mycotoxins

Forty-four pre-and post-nature drying maize kernels were collected from North China Plain and assessed for fungi infection and mycotoxins contamination. The percentage of fungi infection was significantly higher in pre-nature drying samples than post-nature drying samples except for Fusariuim graminearum, which increases from 6.06% to 24.09%. Fusarium, Aspergillus, Altemarict and Trichoderma were main genera. Fusarium verticillioides (24.77%) and E graminearum (15.08%) were predominant species, followed by Aspergillus niger (7.51%) and Aspergillus flavus (4.93%). FB1 and DON were the major mycotoxins presented in the samples, followed by ZEN. All samples showed FB1 ranging from 16.5 to 15.9 mu g/kg. All post-nature drying maize kernels showed DON ranging from 5.8 to 9843.3 itgikg, while 7 of 22 pre-nature drying samples contaminated with DON ranging from 50.7 to 776.6 mu g/kg. The samples contaminated with ZEN in pre-and post-nature drying maize were 3, with the content ranging from 60.5 to 147.6 mu g/kg and from 40.7 to 1056.8 mu g/kg, respectively. Only 1 sample contaminated with AFB1 of 148.4 mu g/kg. The occurrence of mycotoxins is highly in accordance with the incidence of the corresponding mycotoxin-producing fungi. This is the first comprehensive comparison of fungi infection and mycotoxins contamination between pre-and post-nature drying maize kernels.

• 出版日期2017-10
• 单位中国农业科学院