Examinando por Materia "Oryza"

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    Determinacion de arsenico en arroz envasado a granel expendido en los mercados de Lima Metropolitana, mes de noviembre año 2020
    (Universidad Privada Norbert Wiener, 2021-09-12) Tejeda Guillermo, Manuel Ángel; Lizano Gutiérrez, Jesús Víctor
    The objective of this research was to determine the average concentration of arsenic in bulk-packaged rice sold in the markets of Metropolitan Lima in November 2020. Method: A total of 33 polished rice samples, both national and imported, were evaluated. The samples were obtained from the South, East, and North Zones of Metropolitan Lima and were analyzed using the Atomic Absorption with Hydride Generator Method. Data were recorded with a validated instrument, and standard values (200 µg of arsenic/kg of rice) from the Codex Alimentarius and European Union Regulation 2015/1006 were used for comparison. Results: From the total of 33 samples, an average value of 155.5 μg of arsenic/kg was obtained. The average value for the 30 national samples was 154.7 μg/kg, and the average for the 3 imported samples was 163.3 μg/kg. Conclusions: The average values were below the international standards. The average inorganic arsenic values in national rice were within the permitted limits (155.5 μg of arsenic/kg), but 50% of the samples analyzed from the North Zone of Metropolitan Lima had values above the established standard, which suggests a need for further investigation.