Evaluación de la contaminación por aflatoxina B 1 en arroz y maÃz
Resumen
Introducción: La aflatoxina B1 se encuentra entre las micotoxinas más comunes y venenosas producidas por ciertos hongos que dañan a los animales y los cultivos. Las micotoxinas pueden causar una variedad de efectos adversos para la salud y representar una grave amenaza para la salud de los seres humanos. Los lÃmites máximos de residuos de aflatoxina B1 en cereales e ingredientes procesados son de 2 ppb y 5 ppb, respectivamente.
Objetivos: Evaluar el estado de contaminación por aflatoxina B1 en arroz, maÃz y alimentos básicos producidos en la provincia de Ha Giang, en comparación con los niveles máximos permitidos. Métodos: Se analizaron un total de 210 muestras de arroz y maÃz para cuantificar el nivel de aflatoxina B1. El análisis de micotoxinas se realizó mediante cromatografÃa lÃquida de alta resolución, utilizando un detector de fluorescencia.
Resultados: Se encontró que el arroz, los productos de arroz, el maÃz y los productos de maÃz tenÃan un contenido medio de aflatoxin B1, de 1,79 ppb, 2,55 ppb, 2,19 ppb y 6,35 ppb, respectivamente. Los resultados también mostraron que el 71,9 % de las muestras estaban contaminadas con micotoxinas y el 14,28 % de las muestras excedieron el lÃmite máximo permitido.
Conclusión: La concentración de aflatoxina B1 en el 14,28% de las muestras está por encima de los lÃmites permisibles por la norma nacional.
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Referencias
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