Distribution and variation of fungi and major mycotoxins in pre- and post-nature drying maize in North China Plain. (October 2017)

• Record Type: Journal Article
• Authors: Xing, Fuguo; Liu, Xiao; Wang, Limin; Selvaraj, Jonathan Nimal; Jin, Nuo; Wang, Yan; Zhao, Yueju; Liu, Yang
• Is Part Of: Food control. Volume 80(2017:Oct.)
• Page Start: 244
• Page End: 251
• Publication Date: 2017-10
• Subjects: Maize kernels -- Pre- and post-nature drying -- Fungi -- Mycotoxins; Food -- Quality -- Periodicals; Food -- Analysis -- Periodicals; Food handling -- Periodicals; Food industry and trade -- Quality control -- Periodicals; Aliments -- Industrie et commerce -- Qualité -- Contrôle -- Périodiques; Aliments -- Qualité -- Périodiques; Aliments -- Analyse -- Périodiques; Hygiène alimentaire -- Périodiques; Food -- Analysis; Food handling; Food -- Quality; Periodicals; Electronic journals; 664.07
• DOI: 10.1016/j.foodcont.2017.03.055
• Languages: English
• ISSNs: 0956-7135

Abstract

Abstract: 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, Alternaria and Trichoderma were main genera. Fusarium verticillioides (24.77%) and F. 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 315.9 μg/kg. All post-nature drying maize kernels showed DON ranging from 5.8 to 9843.3 μg/kg, while 7 of 22 pre-nature drying samples contaminated with DON ranging from 50.7 to 776.6 μg/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 μg/kg and from 40.7 to 1056.8 μg/kg, respectively. Only 1 sample contaminated with AFB1 of 148.4 μg/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. Highlights: Fungi infection was significantly higher in pre-drying samples than post-drying. F. verticillioides and F. graminearum were predominant species in maize kernels. FB1 and DON were the major mycotoxins presented in the samples, followed by ZEN. DON contamination was significantly higher in post-drying samples than pre-drying. Occurrence of mycotoxins is highly in accordance with incidence of relevant fungi.