Discrimination of wild and cultured european sea bass (Dicentrarchus labrax) using chemical and isotopic analyses

Bell, J., Preston, T. , Henderson, R., Strachan, F., Bron, J., Cooper, K. and Morrison, D.J. (2007) Discrimination of wild and cultured european sea bass (Dicentrarchus labrax) using chemical and isotopic analyses. Journal of Agricultural and Food Chemistry, 55, pp. 5934-5941. (doi:10.1021/jf0704561)

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Abstract

Recent legislation in the European Union (EC/2065/2001) requires that seafood must provide the consumer with information that describes geographical origin and production method. The present studies aimed to establish methods, based on chemical and stable isotopic analysis, that could reliably differentiate between wild and farmed European sea bass (Dicentrarchus labrax). The study measured fatty acid and isotopic compositions (δ<sup>13</sup>C and δ<sup>18</sup>O) of total flesh oil, δ<sup>15</sup>N of the glycerol/choline fraction, and compound-specific analysis of fatty acids (δ<sup>13</sup>C) by isotope ratio mass spectrometry. The sample set comprised 10 wild and 10 farmed sea bass from England (wild) and Scotland or Greece (farmed). Discrimination was achieved using fatty acid composition with 18:0, 18:2n-6, 20:4n-6, and 22:6n-3 providing the highest contributions for discrimination. Principal component analysis of the data set provided good discrimination between farmed and wild sea bass where factor 1 and factor 2 accounted for 60% of the variation in the data.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Preston, Professor Thomas and Morrison, Dr Douglas
Authors: Bell, J., Preston, T., Henderson, R., Strachan, F., Bron, J., Cooper, K., and Morrison, D.J.
College/School:College of Science and Engineering > Scottish Universities Environmental Research Centre
Journal Name:Journal of Agricultural and Food Chemistry
Journal Abbr.:J. Agric. Food Chem.
ISSN:0021-8561
ISSN (Online):1520-5118
Published Online:27 June 2007

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