Evaluación de la contaminación por arsénico de la leche y productos lácteos

Chuyen Van Nguyen, Ba Van Nguyen, Trung Hoang Nguyen, Trang Thi Thu Nguyen, Truong Thi Hoang, Minh Duc Tong, Anh Tuan Le, Hang Thi Dieu Dinh, Chinh Dinh Vu, Dien Duc Nguyen

Resumen

Introducción: La leche y los productos lácteos son nutritivos y pueden desempeñar un papel importante en una dieta saludable. La seguridad de la leche disminuye con el aumento de la concentración de arsénico. Los límites máximos de residuos de arsénico son 500 ppb.
Objetivos: Evaluar el estado de contaminación por arsénico de la leche y los productos lácteos producidos y procesados en algunas provincias y ciudades de Vietnam.
Métodos: Se analizaron un total de 367 muestras. Las muestras se digirieron antes del análisis, para eliminar los compuestos orgánicos y se determinó el contenido total de arsénico mediante espectrofotometría de absorción atómica.
Resultados: Las concentraciones promedio de arsénico total en la leche líquida fueron 139,32 ppb; en el yogur, 169,81 ppb; en el queso, 221,38 ppb; en el pastel de leche, 232,80 ppb; y en la leche en polvo, 35,43 ppb, respectivamente.
Conclusión: Las concentraciones de arsénico en algunas muestras superan los niveles máximos permitidos según la normativa nacional.

Palabras clave

arsénico; contaminación; productos lácteos.

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