Journal ArticleDOI
Arsenic speciation in Brazilian rice grains organically and traditionally cultivated: Is there any difference in arsenic content?
Fabiana Roberta Segura,Juliana Maria Oliveira Souza,Eloisa Silva de Paula,Airton Cunha Martins,Ana Carolina Cavalheiro Paulelli,Fernando Barbosa,Bruno Lemos Batista +6 more
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TLDR
Samples of polished and husked rice (organic and conventional) and gastronomic rice (Arborio, Carnaroli and red/black rice) were analyzed and the results compared to FAO/Codex maximum limits and no violation was found.About:
This article is published in Food Research International.The article was published on 2016-11-01. It has received 40 citations till now. The article focuses on the topics: Black rice.read more
Citations
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Journal ArticleDOI
Mechanism of arsenic uptake, translocation and plant resistance to accumulate arsenic in rice grains
TL;DR: Rice grain arsenic concentrations increase with increasing soil As concentrations until about 60 mg As kg−1soil and then decreases, and resistance mechanisms in rice agroecosystems are further enhanced when adequate concentrations of silicon and sulfur are present in soils and tissues, and when plants are associated with arbuscular mycorrhizal fungi.
Journal ArticleDOI
Atomic Spectrometry Update: review of advances in elemental speciation
TL;DR: The ASU review as mentioned in this paper focuses on advances in elemental speciation and covers a period of approximately 12 months from December 2014, covering all aspects of the analytical atomic spectrometry speciation methods developed for: the determination of oxidation states; organometallic compounds; coordination compounds; metal and heteroatom-containing biomolecules, including metalloproteins, proteins, peptides and amino acids.
Journal ArticleDOI
Realistic risk assessment of arsenic in rice.
TL;DR: It is found that simply washing rice with arsenic-free water before cooking removed 3-43% of the arsenic, resulting in all the rice tested except the most contaminated one being safe to consume by adults.
Journal ArticleDOI
Global Sourcing of Low-Inorganic Arsenic Rice Grain
Manus Carey,Caroline Meharg,Paul N. Williams,Enerst M. Marwa,Xiao Jiujin,Xiao Jiujin,Júlia Gomes Farias,Júlia Gomes Farias,P. Mangala C.S. De Silva,Antonio J. Signes-Pastor,Ying Lu,Fernando Teixeira Nicoloso,Laurie Savage,Katrina Campbell,Christopher T. Elliott,Eureka Adomako,Andy J. Green,Eduardo Moreno-Jiménez,Ángel A. Carbonell-Barrachina,Eridha Ayu Triwardhani,Febbyandi Isnanda Pandiangan,Parvez I. Haris,Youssef F. Lawgali,Alessia Sommella,Massimo Pigna,Catherine Brabet,Didier Montet,Keston Njira,Michael J. Watts,Andrew A. Meharg +29 more
TL;DR: In this article, the authors surveyed polished white rice across representative regions of rice production globally for arsenic speciation, and found that inorganic arsenic dominated when grain sum of species was < 100μg/kg, with DMA dominating at higher concentrations.
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Do arsenic levels in rice pose a health risk to the UK population
TL;DR: Consumption of rice and rice products can be a significant exposure pathway to inorganic arsenic (iAs), which is a group 1 carcinogen to humans, and consumers could be better informed whether the marketed product is fit for infants and young children, via appropriate product labelling containing information about iAs concentration.
References
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Journal ArticleDOI
Effect of redox potential and pH on arsenic speciation and solubility in a contaminated soil
TL;DR: In this article, the influence of redox potential and pH on arsenic speciation and solubility was studied in a contaminated soil, and the observed slow kinetics of the As(V)-As(III) transformation and the high concentrations of Mn present indicate that, under reduced soil conditions, arsenic solubability could be controlled by a Mn{sub 3}(AsO{sub 4}){sub 2} phase.
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Arsenic uptake and metabolism in plants.
TL;DR: Hyperaccumulation appears to involve enhanced arsenate uptake, decreased arsenite-thiol complexation and arsenite efflux to the external medium, greatly enhanced xylem translocation of arsenite, and vacuolar sequestration of arsenites in fronds.
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A review of the arsenic cycle in natural waters
John F. Ferguson,Jerome Gavis +1 more
TL;DR: A review of the occurrence and cycling of arsenic in fresh waters is presented in this paper, where the possible microbially-mediated reactions of arsenic, including oxidation of arsenite, methylation of arsenic species, and reduction of arsenate, are discussed with reference to the locale of the reaction in the water column or in the sediments.
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Variation in Arsenic Speciation and Concentration in Paddy Rice Related to Dietary Exposure
TL;DR: Pot experiments show that the proportions of DMAV in the grain are significantly dependent on rice cultivar (p = 0.026) and that plant nutrient status is effected by arsenic exposure.