Zearalenone (ZEA), a mycotoxin produced by several Fusarium molds, can be found in many cereals and related products. The toxicity of ZEA has been reported for both humans and animals. Therefore, many countries have adopted regulations in foods and feed materials to limit the exposure to this contaminant. In this paper, we propose a multicommutated flow-through optosensor to quantify ZEA in different cereal samples. ZEA was retained and pre-concentrated on C₁₈ silica gel, and the use of the multicommutated flow manifold allowed the automated retention/desorption of ZEA on the solid microbeads by the use of appropriate carrier/eluting solutions, hence increasing the selectivity and sensitivity of the system. The native fluorescence of ZEA was recorded on the solid phase at λ_exc/λ_em of 265/465 nm/nm. A QuEChERS procedure was used to carry out the extraction of ZEA from different cereal samples (feedstuff materials). Recovery studies were performed to assess the accuracy of the method, obtaining recovery yields between 93% and 107% in all the analyzed samples. LC-MS was employed as reference method. The quantitation limit of the proposed method was low enough to fulfill the maximum residue levels established by the Commission of the European Communities, thus demonstrating its potential use for the analysis of ZEA in feedstuffs.

玉米赤霉烯酮（ZEA）是由几种镰刀霉菌产生的霉菌毒素，可在许多谷物和相关产品中找到。已经报道了ZEA对人和动物的毒性。因此，许多国家已经在食品和饲料原料中采用了法规，以限制这种污染物的暴露。在本文中，我们提出了一种多转换流通式光电传感器来定量不同谷物样品中的ZEA。ZEA保留并在C ₁₈硅胶上预浓缩，并且使用多交换流路歧管，可以通过使用适当的载体/洗脱液自动将ZEA保留/解吸在固体微珠上，从而提高了ZEA的选择性和灵敏度。系统。ZEA的天然荧光被记录在λ的固相上_EXC /λ _EM的465分之265纳米/纳米。使用QuEChERS程序从不同谷物样品（饲料原料）中提取ZEA。进行了回收率研究以评估该方法的准确性，在所有分析的样品中回收率均在93％至107％之间。LC-MS用作参考方法。拟议方法的定量限低到足以满足欧洲共同体委员会确定的最大残留量水平，从而证明了其在饲料中ZEA分析中的潜在用途。