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Migration of components from cork stoppers to food: Challenges in determining inorganic elements in food simulants

The inorganic elements potentially migrating from cork to a food simulant [a hydroalcoholic solution containing 12 and 20% (v/v) ethanol] have been determined by means of inductively coupled plasma (ICP) with atomic emission and mass spectrometric detection. The experimental instrumental conditions were evaluated in depth, taking into account spectroscopic and nonspectroscopic interference caused by the presence of ethanol and other components in the sample. We report concentrations ranging from 4 μg kg-1 for Cd to 28000 μg kg-1 for Al in the food simulant (concentrations given in kilograms of cork). The values found for Ba, Mn, Fe, Cu, and Zn have been compared with the guideline values stated in EU Regulation 10/2011. In all cases, cork met the general safety criteria applicable to food contact material. Finally, we have proposed water as an alternative to the hydroalcoholic solution to simplify quantification of the tested elements using ICP techniques

The Spanish National Research Program supported this work through Project CGL2010-22168-C03-03

© Journal of Agricultural and Food Chemistry, 2014, vol. 62, núm. 24, p. 5690-5698

American Chemical Society (ACS)

Author: Corona Prieto, Teresa
Iglesias Juncà, Mònica
Anticó i Daró, Ma. Enriqueta
Date: 2014
Abstract: The inorganic elements potentially migrating from cork to a food simulant [a hydroalcoholic solution containing 12 and 20% (v/v) ethanol] have been determined by means of inductively coupled plasma (ICP) with atomic emission and mass spectrometric detection. The experimental instrumental conditions were evaluated in depth, taking into account spectroscopic and nonspectroscopic interference caused by the presence of ethanol and other components in the sample. We report concentrations ranging from 4 μg kg-1 for Cd to 28000 μg kg-1 for Al in the food simulant (concentrations given in kilograms of cork). The values found for Ba, Mn, Fe, Cu, and Zn have been compared with the guideline values stated in EU Regulation 10/2011. In all cases, cork met the general safety criteria applicable to food contact material. Finally, we have proposed water as an alternative to the hydroalcoholic solution to simplify quantification of the tested elements using ICP techniques
The Spanish National Research Program supported this work through Project CGL2010-22168-C03-03
Format: application/pdf
ISSN: 0021-8561 (versió paper)
1520-5118 (versió electrònica)
Document access: http://hdl.handle.net/10256/11948
Language: eng
Publisher: American Chemical Society (ACS)
Collection: MICINN/PN 2011-2013/CGL2010-22168-C03-0
Reproducció digital del document publicat a: http://dx.doi.org/10.1021/jf500170w
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Is part of: © Journal of Agricultural and Food Chemistry, 2014, vol. 62, núm. 24, p. 5690-5698
Rights: Tots els drets reservats
Subject: Taps de suro
Bottle corks
Title: Migration of components from cork stoppers to food: Challenges in determining inorganic elements in food simulants
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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