Characterization of nanomaterials in food by electron microscopy

Dudkiewicz, Agnieszka and Tiede, Karen and Loeschner, Katrin and Soegaard Jensen, Louise Helene and Jensen, Eric and Wierzbicki, Rafal and Boxall, Alistair B. A. and Molhave, Kristian (2011) Characterization of nanomaterials in food by electron microscopy. TrAC Trends in Analytical Chemistry, 30 (1). pp. 28-43. ISSN 0165-9936

Full content URL: http://www.sciencedirect.com/science/article/pii/S...

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Characterization of nanomaterials in food by electron microscopy

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Abstract

Engineered nanomaterials (ENMs) are increasingly being used in the food industry. In order to assess the efficacy and the risks of these materials, it is essential to have access to methods that not only detect the nanomaterials, but also provide information on the characteristics of the materials (e.g., size and shape).

This review presents an overview of electron microscopy (EM)-based methods that have been, or have the potential to be, applied to imaging ENMs in foodstuffs. We provide an overview of approaches to sample preparation, including drying, chemical treatment, fixation and cryogenic methods. We then describe standard and non-standard EM-based approaches that are available for imaging prepared samples. Finally, we present a strategy for selecting the most appropriate method for a particular foodstuff.

Keywords:cryo-electron microscopy, Detection, Environmental electron microscopy, Foodstuff, imaging, Liquid electron microscopy, Nanoparticle, sample preparation, Scanning electron microscopy, transmission electron microscopy
Subjects:D Veterinary Sciences, Agriculture and related subjects > D610 Food Science
F Physical Sciences > F110 Applied Chemistry
Divisions:College of Science > National Centre for Food Manufacturing
ID Code:16396
Deposited On:14 Jan 2015 15:14

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