Arsenic & Rice by Andrew A. Meharg

By Andrew A. Meharg

Rice is the staple nutrition for 1/2 the world’s inhabitants. intake of rice is the main publicity course globally to the category one, non-threshold carcinogen inorganic arsenic. This booklet explains the resources of arsenic to paddy soils and the biogeochemical tactics and plant physiological attributes of paddy soil-rice ecosystems that bring about excessive concentrations of arsenic in rice grain. It provides the worldwide development of arsenic focus and speciation in rice, discusses human exposures to inorganic arsenic from rice and the ensuing wellbeing and fitness dangers. It additionally highlights specific populations that experience the top rice consumptions, which come with Southern and South East Asians, weaning infants, gluten intolerance victims and people eating rice milk. The publication additionally offers the knowledge of arsenic focus and speciation in different significant vegetation and descriptions ways for reducing arsenic in rice grain and within the human nutrition via agronomic management.

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2006) surveyed arsenic impacted and non-impacted regions of Bangladesh at approximate frequencies that equated to the importance of production from these two zones. This weighting of to relative production is crucial if regional, nation and global arsenic rice burdens are to be understood. Large within country variation in rice grain arsenic is observed for the US where the South-Central region has mean arsenic concentrations almost double that for California, 300 and 170 ng g−1, respectively (Williams et al.

Body weight data are from the survey itself, based on respondent’s information. 8 a Data in the Table are the sum of boiled rice and raw daily rice consumption converted into raw rice, using a 3:1 boiled:raw rice conversion factor. 5 kg for toddler were used in the consumption on a body weight basis calculation. 2). The US Department of Agriculture Continuing Survey of Food Intake by Individuals (CSFII) database reports similar information to UK databases (Tsuji et al. e. boiled rice), making direct comparisons difficult.

Environ Sci Technol 42:7542–7546 Sun G-X, Zhu YG, Williams PN, Deacon C, Meharg AA (2009) Survey of arsenic and its speciation in cereal rice products. Environ Int 35:473–475 Torres-Escribano S, Leal M, Velez D, Montoro R (2008) Total and inorganic arsenic concentrations in rice sold in Spain, effect of cooking, and risk assessments. Environ Sci Technol 42:3867–3872 Williams PN, Price AH, Raab A, Hossain SA, Feldmann J, Meharg AA (2005) Variation in arsenic speciation and concentration in paddy rice related to dietary exposure.

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