In this study, a preliminary food quality and safety assessment was performed on organic and cage-free egg samples marketed in the state of Rio de Janeiro, Brazil, that were analyzed concerning veterinary drug and pesticide residues using high performance and ultra performance liquid chromatography coupled to tandem mass spectrometry. The polyether ionophore salinomycin was detected in two organic egg samples (25% of the organic samples), one with an estimated concentration even higher than the maximum permissible amount of 3 µg kg⁻¹ established for conventional eggs by the European Commission. The other sample presented a concentration higher than the limit of detection of 0.3 µg kg⁻¹, but lower than the lowest calibration level of 1.5 µg kg⁻¹. Regarding pesticide residues, spiroxamine, pirimiphos, mephosfolan and pyraclostrobin were identified at residual levels below the lowest calibration level of 4.5 µg kg⁻¹, except for one organic egg sample, presenting 8.3 µg kg⁻¹ of spiroxamine. Spiroxamine was identified in 62% of the assessed samples. These findings indicate that non-conformities were found even with a limited number of samples, impacting the confidence in the quality of organic and cage-free alternative systems in egg production. The hazard index (HI) approach demonstrated that chemical food safety might be at risk, since a mixture of the detected analytes may pose a risk for children up to 27 kg, through egg consumption.

中文翻译：

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使用LC-MS / MS在有机和无笼替代系统中生产的鸡蛋中同时存在兽药和农药残留的初步研究。

在这项研究中，对巴西里约热内卢州销售的有机鸡蛋和无笼鸡蛋进行了初步食品质量和安全性评估，并使用高效液相色谱和超高效液相色谱法对涉及兽药和农药残留的样品进行了分析。串联质谱。在两个有机鸡蛋样品（占有机样品的25％）中检测到了聚醚离子载体盐霉素，其中一个估计浓度甚至高于欧盟委员会为常规鸡蛋确定的最大允许量3 µg kg ^-1。其他样品的浓度高于检出限0.3 µg kg ^-1，但低于最低校正水平1.5 µg kg ^-1。关于农药残留，除一个有机鸡蛋样品中有8.3 µg kg ^-1的螺氧胺外，其余残留水平低于4.5 µg kg ^-1的最低校准水平时，鉴定出了spiroxamine，丙胺磷，美沙磷和吡菌胺酯。在62％的评估样品中鉴定出了吡咯明。这些发现表明，即使样本数量有限，也发现了不合格品，影响了鸡蛋生产中有机和无笼替代系统质量的信心。危害指数（HI）方法表明，化学食品安全性可能会受到威胁，因为检测到的分析物混合物可能通过食用鸡蛋而对27公斤以下的儿童构成危险。