Improved non-invasive Optical coherence tomography detection of different engineered nanoparticles in food mimicking matrices

Food industry and regulators are in need of fast and reliable analytical methods for quality control. This especially counts for the detection of engineered nanomaterials (ENMs) in food products. Respective EU regulation is in force, but the development of appropriate methods is still underway. This paper updates the scope of Optical Coherence Tomography (OCT) for ENM/food matrix analysis. A range of nanomaterials and composites – Au@SiO2, Ag, Ag@SiO2 and SiO2 – in a simplified food matrix was investigated. The earlier finding of linear dependencies between concentration and light responses could be reproduced. Such correlation was especially pronounced for SiO2 which is surprising, as it lacks NIR plasmon resonance. Being able to analyse non-invasively for a relevant industrial compound such as SiO2, makes OCT a superb candidate for screening purposes.

GROMBE Ringo;  KIRSTEN Lars;  MEHNER Mirko;  LINSINGER Thomas;  KOCH Edmund; 

2016-07-06

ELSEVIER SCI LTD

JRC97264

0308-8146,   

https://publications.jrc.ec.europa.eu/repository/handle/JRC97264,   

10.1016/j.foodchem.2016.06.008,