Advance of the Removal Technology of Heavy Metals in Foods
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Abstract:
Heavy metal poisoning is harm to multiple organs and multiple systems of human bodies, which is lifelong and irreversible. The food safety problems caused by heavy metal pollution are much more serious than the other pollution factors. Heavy metals cannot be biodegraded, insteadthey can be enriched tens of thousands of times through biological amplification of the food chain, and enter the body finally. The three wastes from the industries of energy, transportation, metallurgy and material, as well as the pesticides and fertilizer in the agriculture activity, are all the causes of food contamination. Controlling the heavy metals contamination from the source can solve the problem completely, but it is difficult to finish in a short time. Therefore, removal of heavy metals in foods effectively becomes a fatal question and a research focus at home and abroad. Based on the analysis and summary of existing research literature, this paper combed the research methods and technology. The removal technology of heavy metals in the food raw materials during growth process and before food consumption was discussed, respectively. In addition, the application and efficiency of the established methods were summarized and analyzed, and the future development trend and prospect were also discussed.
