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Preparation of a beef-extract as a laboratory reference material for the determination of heterocyclic amines.

Bermudo, Elisabeth, Busquets, Rosa, Barceló-Barrachina, Elena, Puignou, Lluís and Galceran, Maria Teresa (2004) Preparation of a beef-extract as a laboratory reference material for the determination of heterocyclic amines. Journal of Chromatography B, 802(1), pp. 61-68. ISSN (print) 1570-0232

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Abstract

The present paper describes the preparation of a suitable laboratory reference material (LRM) to validate analytical methods for the determination of heterocyclic amines (HAs) in foods. Three different lots of reference material were prepared using a beef extract which was contaminated with a well-known quantity of amines at different levels ranging from 10 to 75 ng/g. These materials were then lyophilised under determined conditions and, after grinding and sieving, homogenised and, finally, bottled and labelled. Homogeneity and stability studies were performed and no statistical differences were observed in the analysis of variances for within- and between-bottle results, thus demonstrating the homogeneity of the material. Stability at different storage temperatures (- 18, +4 +25 and +40 degreesC) and times (1, 2, 3 and 6 months) was also tested. Therefore, the material can be considered homogeneous and stable and can be proposed for use in inter-comparison exercises for the determination of HAs.

Item Type: Article
Additional Information: This work was supported by Commission of the European Community [grant number QLKI-CT99-01197]; and Ministerio de Ciencia y Tecnologia [grant number AGL2000-094]
Research Area: Agriculture, veterinary and food science
Cancer studies
Chemistry
Faculty, School or Research Centre: Faculty of Science (until 2011) > School of Pharmacy and Chemistry
Depositing User: Rosa Busquets
Date Deposited: 08 Jan 2015 11:13
Last Modified: 08 Jan 2015 11:13
URI: http://eprints.kingston.ac.uk/id/eprint/29340

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