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

Last updated on 20-1-2021 by Jill Alexandre

Public Access


Peer reviewed scientific article



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, th…

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