Rice Grain Cadmium Concentrations in the Global Supply-Chain
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Published:2020-03-02
Issue:4
Volume:12
Page:869-876
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ISSN:2451-9766
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Container-title:Exposure and Health
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language:en
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Short-container-title:Expo Health
Author:
Shi Zhengyu, Carey Manus, Meharg Caroline, Williams Paul N., Signes-Pastor Antonio J., Triwardhani Eridha Ayu, Pandiangan Febbyandi Isnanda, Campbell Katrina, Elliott Christopher, Marwa Ernest M., Jiujin Xiao, Farias Júlia Gomes, Nicoloso Fernando Teixeira, De Silva P. Mangala C. S., Lu Ying, Norton Gareth, Adomako Eureka, Green Andy J., Moreno-Jiménez Eduardo, Zhu Yongguan, Carbonell-Barrachina Ángel Antonio, Haris Parvez I., Lawgali Youssef F., Sommella Alessia, Pigna Massimo, Brabet Catherine, Montet Didier, Njira Keston, Watts Michael J., Hossain Mahmud, Islam M. Rafiqul, Tapia Yasna, Oporto Carla, Meharg Andrew A.ORCID
Abstract
AbstractOne of cadmium’s major exposure routes to humans is through rice consumption. The concentrations of cadmium in the global polished (white), market rice supply-chain were assessed in 2270 samples, purchased from retailers across 32 countries, encompassing 6 continents. It was found on a global basis that East Africa had the lowest cadmium with a median for both Malawi and Tanzania at 4.9 μg/kg, an order of magnitude lower than the highest country, China with a median at 69.3 μg/kg. The Americas were typically low in cadmium, but the Indian sub-continent was universally elevated. In particular certain regions of Bangladesh had high cadmium, that when combined with the high daily consumption rate of rice of that country, leads to high cadmium exposures. Concentrations of cadmium were compared to the European Standard for polished rice of 200 μg/kg and 5% of the global supply-chain exceeded this threshold. For the stricter standard of 40 μg/kg for processed infant foods, for which rice can comprise up to 100% by composition (such as rice porridges, puffed rice cereal and cakes), 25% of rice would not be suitable for making pure rice baby foods. Given that rice is also elevated in inorganic arsenic, the only region of the world where both inorganic arsenic and cadmium were low in grain was East Africa.
Publisher
Springer Science and Business Media LLC
Subject
Health, Toxicology and Mutagenesis,Public Health, Environmental and Occupational Health,Pollution,Water Science and Technology
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