a Department of Food and Analytical Services , Federal Institute of Industrial Research, Oshodi , Ikeja , Lagos , Nigeria.
Food Addit Contam Part B Surveill. 2013;6(4):294-300. doi: 10.1080/19393210.2013.823626. Epub 2013 Aug 16.
This exploratory study was aimed at investigating the spectrum of fungal metabolites in the processed food and snacks. Twenty types of snacks made separately from groundnut (n = 10), maize (n = 8) and a combination of groundnut and maize (n = 2) were analysed for naturally occurring mycotoxins and other fungal metabolites by a liquid chromatography-tandem mass spectrometric multi-mycotoxin method. A total of 18, 21 and 32 metabolites were detected and quantified in the groundnut-, groundnut/maize- and maize-based snacks, respectively. Aflatoxins contaminated 2, 3 and 5 of the groundnut/maize-, groundnut- and maize-based snacks at concentrations up to 14, 1041 and 74 µg kg(-1), respectively. Thus, the National Agency for Food and Drug Administration and Control (NAFDAC) recommended limit of 20 µg kg(-1) for aflatoxins was exceeded in 6 of the 20 snacks. Fumonisins contaminated all the maize- and groundnut/maize-based snacks with higher concentrations in the maize-based snacks (mean = 218.7 µg kg(-1)) compared with the groundnut/maize-based snacks (mean = 178.5 µg kg(-1)). Up to 26 different metabolites were found to co-occur in the same samples, thus posing an additional threat to the consumers due to possible additive and/or synergistic effects.
这项探索性研究旨在调查加工食品和零食中真菌代谢物的种类。通过液相色谱-串联质谱多真菌毒素法，对分别由花生（n = 10）、玉米（n = 8）和花生与玉米混合（n = 2）制成的 20 种零食进行了天然霉菌毒素和其他真菌代谢物的分析。在花生、花生/玉米和玉米基零食中分别检测和定量了 18、21 和 32 种代谢物。在花生/玉米基、花生基和玉米基零食中，黄曲霉毒素污染了 2、3 和 5 种，浓度分别高达 14、1041 和 74 µg kg(-1)。因此，在 20 种零食中的 6 种中超过了国家食品药品监督管理局（NAFDAC）规定的黄曲霉毒素 20 µg kg(-1)的限量。所有玉米基和花生/玉米基零食都受到了伏马菌素的污染，其中玉米基零食中的浓度更高（平均值为 218.7 µg kg(-1)），而花生/玉米基零食中的浓度较低（平均值为 178.5 µg kg(-1)）。在相同的样本中发现了多达 26 种不同的代谢物共同存在，由于可能存在的相加和/或协同作用，这对消费者构成了额外的威胁。
