E171, E174 and E175: the nano content of three food additives under the microscope

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14/06/2021
Brief
additives food gold nanosilver titanium dioxide characterization

The European Food Safety Agency (EFSA) has published a report on the physicochemical characterization of nanoparticles in food additives. Carried out with Sciensano and the support of the Joint Research Center (JRC) the tests have highlighted :

  • between 64 and 73% of titanium dioxide nanoparticles in E171 additives on the market
  • more than 97% of silver nanoparticles contained in the tested E174 additives
  • no gold nanoparticles detected in the tested E175 additives.

Our information sheets to go further

Bibliography
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Nanotechnologies and ethics – Bibliography
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Risks associated with the ingestion of titanium dioxide nanoparticles
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The Working Group on Mandatory Reporting of Nanomaterials and the R-Nano Registry (WG R-Nano)
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