TEM and SP-ICP-MS analysis of the release of silver nanoparticles from decoration of pastry

Journal of Agricultural and Food Chemistry
E VerleysenJ Mast

Abstract

Metallic silver is an EU approved food additive referred to as E174. It is generally assumed that silver is only present in bulk form in the food chain. This work demonstrates that a simple treatment with water of "silver pearls", meant for decoration of pastry, results in the release of a subfraction of silver nanoparticles. The number-based size and shape distributions of the single, aggregated, and/or agglomerated particles released from the silver pearls were determined by combining conventional bright-field TEM imaging with semiautomatic particle detection and analysis. In addition, the crystal structure of the particles was studied by electron diffraction and chemical information was obtained by combining HAADF-STEM imaging with EDX spectroscopy and mapping. The TEM results were confirmed by SP-ICP-MS. The representative Ag test nanomaterial NM-300 K was used as a positive control to determine the uncertainty on the measurement of the size and shape of the particles.

References

Feb 12, 2009·Diagnostic Pathology·Jan Mast, Lien Demeestere

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Citations

Aug 25, 2015·Frontiers in Chemistry·Catia Contado
Jun 24, 2016·Analytical and Bioanalytical Chemistry·Manuel D MontañoJames F Ranville
Oct 5, 2016·Analytical and Bioanalytical Chemistry·Monica MattarozziRuud Peters
Apr 25, 2017·Journal of Agricultural and Food Chemistry·Federica GallocchioAntonia Ricci
Jun 20, 2018·Microorganisms·Kévin GilloisMuriel Mercier-Bonin
May 31, 2018·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·Ru DingQiang Wang
Jan 11, 2020·Journal of Toxicology and Environmental Health. Part B, Critical Reviews·Yuqiang BiMuriel Mercier-Bonin
Jan 29, 2020·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·Otmar GeissElke Anklam
Jun 5, 2020·Small·Magdiel Inggrid SetyawatiKee Woei Ng
Sep 22, 2017·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·Katrin LoeschnerJens J Sloth
Mar 9, 2017·Frontiers in Chemistry·Bryan Calderón-JiménezJosé R Vega Baudrit
Sep 19, 2020·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·Sandra De VosJan Mast
Jun 24, 2021·Analytical Methods : Advancing Methods and Applications·Eduardo BoleaFrancisco Laborda
Aug 21, 2021·Journal of Agricultural and Food Chemistry·Janja VidmarKatrin Loeschner

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