Accumulation, distribution, and speciation of arsenic in wheat grain
- PMID: 20578703
- DOI: 10.1021/es100765g
Accumulation, distribution, and speciation of arsenic in wheat grain
Abstract
Food can be an important source of inorganic As for human intake. Recent studies have focused on rice, while little information is available on As accumulation, distribution, and speciation in wheat, which is the second most important food grain cereal. Grain samples of 26 wheat cultivars grown in five field trials located in productive farming regions in Europe were therefore analyzed for As concentration and speciation. Grain from four trials contained low concentrations of total As (7.7 +/- 5.4 microg kg(-1)), reflecting low levels of As in the soils (1.3-11 mg kg(-1)). In contrast, at one of the trial sites the As level in the soil was greater (29 mg kg(-1)), and much higher As concentrations (69 +/- 17 microg kg(-1)) were present in the wheat grain. Milling of wheat grain into bran and white flour fraction showed the concentration of As in the bran, with a 3.8-4.7-fold higher As concentration than in the white flour. Two methods (a phosphate buffer solution and 1% HNO(3)) were used to extract As species from wholemeal, bran, and white flour of wheat, with average extraction efficiencies of 65% and 88%, respectively. Only inorganic As was found in the extracts, with no methylated As being detected. The contribution of wheat to human intake of inorganic As is small for wheat crops grown in uncontaminated soils but becomes significant for those grown in soils with elevated As. In the latter case, milling can be used to reduce the As concentration in the white flour.
Similar articles
-
Arsenic contamination of the environment-food chain: a survey on wheat as a test plant to investigate phytoavailable arsenic in Italian agricultural soils and as a source of inorganic arsenic in the diet.J Agric Food Chem. 2010 Sep 22;58(18):10176-83. doi: 10.1021/jf102084p. J Agric Food Chem. 2010. PMID: 20735003
-
Greatly enhanced arsenic shoot assimilation in rice leads to elevated grain levels compared to wheat and barley.Environ Sci Technol. 2007 Oct 1;41(19):6854-9. doi: 10.1021/es070627i. Environ Sci Technol. 2007. PMID: 17969706
-
Distribution and speciation of iron and zinc in grain of two wheat genotypes.J Agric Food Chem. 2014 Jan 22;62(3):708-16. doi: 10.1021/jf403331p. Epub 2014 Jan 13. J Agric Food Chem. 2014. PMID: 24382168
-
The fate of arsenic in soil-plant systems.Rev Environ Contam Toxicol. 2012;215:1-37. doi: 10.1007/978-1-4614-1463-6_1. Rev Environ Contam Toxicol. 2012. PMID: 22057929 Review.
-
Arsenic accumulation in rice: Consequences of rice genotypes and management practices to reduce human health risk.Environ Int. 2016 Nov;96:139-155. doi: 10.1016/j.envint.2016.09.006. Epub 2016 Sep 17. Environ Int. 2016. PMID: 27649473 Review.
Cited by
-
Sulfur reduces the root-to-shoot translocation of arsenic and cadmium by regulating their vacuolar sequestration in wheat (Triticum aestivum L.).Front Plant Sci. 2022 Oct 5;13:1032681. doi: 10.3389/fpls.2022.1032681. eCollection 2022. Front Plant Sci. 2022. PMID: 36275602 Free PMC article.
-
Spatial distribution characteristics and evaluation of soil pollution in coal mine areas in Loess Plateau of northern Shaanxi.Sci Rep. 2022 Sep 30;12(1):16440. doi: 10.1038/s41598-022-20865-6. Sci Rep. 2022. PMID: 36180563 Free PMC article.
-
Brazilian Genetic Diversity for Desirable and Undesirable Elements in the Wheat Grain.Biol Trace Elem Res. 2021 Jun;199(6):2351-2365. doi: 10.1007/s12011-020-02338-x. Epub 2020 Aug 14. Biol Trace Elem Res. 2021. PMID: 32797369
-
Baseline heavy metals in plant species from some industrial and rural areas: Carcinogenic and non-carcinogenic risk assessment.MethodsX. 2018 Jan 31;5:43-60. doi: 10.1016/j.mex.2018.01.003. eCollection 2018. MethodsX. 2018. PMID: 30622909 Free PMC article.
-
Accumulation of As, Cd, and Pb in Sixteen Wheat Cultivars Grown in Contaminated Soils and Associated Health Risk Assessment.Int J Environ Res Public Health. 2018 Nov 21;15(11):2601. doi: 10.3390/ijerph15112601. Int J Environ Res Public Health. 2018. PMID: 30469364 Free PMC article.
Publication types
MeSH terms
Substances
Grants and funding
LinkOut - more resources
Full Text Sources
Medical
Research Materials