Determination of Ochratoxin A in Wine by High-Performance Thin-Layer Chromatography using Charged Coupled Device
نویسندگان
چکیده
Um método foi desenvolvido e validado para a determinação de ocratoxina A (OTA) em vinho. Foi utilizado um sistema contendo um detector de carga acoplada (CCD) para adquirir as imagens fluorescentes da micotoxina obtidas a partir das placas de cromatografia em camada delgada de alta eficiência (HPTLC) sob luz ultravioleta. O método desenvolvido mostrou recuperação média de 90,4%. O limite de quantificação e o limite de detecção foram de 0,1 μg L e 0,016 μg L, respectivamente. Os resultados da validação confirmaram a eficiência do método, que é suficientemente sensível para ser utilizado para quantificar OTA em vinho. A OTA foi encontrada em uma das amostras de vinho na concentração de 4,5 μg L, que é superior ao limite de 2 μg L considerado aceitável pelo Comitê Científico das Comunidades Européias. Este estudo demonstrou a aplicabilidade do sistema HPTLC-CCD para determinar OTA em vinho.
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