Ochratoxin A (OTA) is mainly found in cereals and cereal-based foodstuffs, but also in wine. Being one of the most consumed alcoholic drinks in Portugal and one of the main sources of human exposure to OTA, wine monitoring and exposure studies are essential. The analytical methodology consisted of the direct injection of the filtered samples into the liquid chromatograph, equipped with fluorescent detection (LC-FLD). Linearity was adequate, both in mobile phase and in matrix-matched solutions, with R² values higher than 0.997. The limits of detection were 0.08 and 0.39 µg/L for white and red wine, respectively and recoveries were above 91.9%. One hundred wine samples acquired on the Portuguese market were investigated. In 5 samples the OTA was detected, with the red wine presenting higher frequency of contamination. Regarding the risk to human health it was observed that the estimated weekly intake (EWI) is considerably lower than the established tolerable weekly intake (TWI).

ch曲霉毒素A（OTA）主要存在于谷物和谷物食品中，但也存在于葡萄酒中。作为葡萄牙最消耗酒精的饮料之一，也是人类接触OTA的主要来源之一，葡萄酒监测和暴露研究至关重要。分析方法包括将过滤后的样品直接注入配备荧光检测（LC-FLD）的液相色谱仪中。在R ^2的流动相和基质匹配的溶液中，线性都足够值高于0.997。白葡萄酒和红葡萄酒的检出限分别为0.08和0.39 µg / L，回收率高于91.9％。对在葡萄牙市场上获得的100个葡萄酒样品进行了调查。在5个样品中检测到OTA，其中红酒污染的频率更高。关于人类健康的风险，据观察，估计的每周摄入量（EWI）大大低于既定的每周耐受摄入量（TWI）。