Background

The current meta-analysis study was aimed to estimate the potentially toxic elements (PTEs) contamination in cereal grains and their products such as wheat, rice, corn, maize, barley, oat, peas, soybean, cornflakes, and breakfast.

Scope and approach

The recommended databases, including PubMed, Scopus, and ScienceDirect databases, were investigated to collect data regarding the PTEs contamination in cereal-based products from 1 January 1983 to 30 May 2019.

Key findings and conclusions

Among 1401 retrieved citations in the identification step, 45 articles were included in the conducted meta-analysis. In this context, the overall rank order of PTEs mean concentration in the cereal foods was Fe > Zn > Mn > Cu > Ni > Cr > Cd > As > Pb > Sn > Hg. The results of the current study showed that processing has a strong effect on the reduction of PTEs except in the case of Zn and Sn. The concentration of Cu, Cd, Pb, Fe, Hg and Mn in wheat was higher than corn and rice. The amount of Zn and As in rice was greater than wheat and corn while the concentration of Ni and Cr in corn was higher than wheat and rice. The findings of this meta-analysis may be useful for the building of risk assessment models aiming to derive data for the development of specific actions to reduce exposure to PTEs through the consumption of the cereal-based products.

中文翻译：

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谷类食品中的潜在有毒元素（PTE）：系统评价和荟萃分析

背景

当前的荟萃分析研究旨在估算谷物颗粒及其产品（例如小麦，大米，玉米，玉米，大麦，燕麦，豌豆，大豆，玉米片和早餐）中的潜在有毒元素（PTE）污染。

范围和方法

调查了推荐的数据库，包括PubMed，Scopus和ScienceDirect数据库，以收集有关1983年1月1日至2019年5月30日谷物类产品中PTE污染的数据。

主要发现和结论

在鉴定步骤中检索到的1401篇引文中，进行的荟萃分析包括45篇文章。在这种情况下，谷物食品中PTE的平均浓度的总体排名为Fe> Zn> Mn> Cu> Ni> Cr> Cd> As> Pb> Sn> Hg。目前的研究结果表明，加工过程对减少PTE的影响很大，除了Zn和Sn的情况。小麦中的铜，镉，铅，铁，汞和锰的含量高于玉米和大米。水稻中锌和砷的含量高于小麦和玉米，而玉米中镍和铬的含量高于小麦和水稻。