arsÊnio e arroz: toxicidade, metabolismo e seguranÇa alimentar
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ID: 163243
2015
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Abstract
Arsenic is considered a semimetal, and its wide distribution in the Earth's crust in different chemical forms, including organic and inorganic species, has a great deal of influence on the mechanisms of toxicity. Exposure to arsenic can be either through occupational practice (use of pesticides) or by the consumption of water and food containing the element. Rice is considered a fundamental constituent of the basic diet of Brazilians and is usually cultivated in flooded conditions. Such a plantation system results in an increased amount of As in the soil and hence a greater accumulation of As in the plant, which is highlighted by the inorganic species' classification as highly toxic. Besides the use of mitigation techniques to reduce the toxicological risk, monitoring the concentration of As and its chemical species in rice and rice products is required through the establishment of legislation in the area. Thus, some world organizations are conducting improved research to determine and establish acceptable concentrations of As and its chemical species in rice, e. g., in 2012, FDA researchers described a chemical speciation methodology for As in rice and rice products. Hence, the application of existing chemical speciation methods and the establishment of parameters for ensuring food security and exposure risk assessment deserve particular consideration.
| Reference Key |
souza2015qumicaarsnio
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|---|---|
| Authors | ;Juliana M. O. Souza;Maria F. H. Carneiro;Ana Carolina C. Paulelli;Denise Grotto;Ariano M. Magalhães Júnior;Fernando Barbosa Júnior;Bruno L. Batista |
| Journal | greece and rome |
| Year | 2015 |
| DOI |
10.5935/0100-4042.20140279
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| URL | |
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