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Food Chem. 2019 May 15;280:321-327. doi: 10.1016/j.foodchem.2018.12.075. Epub 2018 Dec 21.

Rapid authentication of European sea bass (Dicentrarchus labrax L.) according to production method, farming system, and geographical origin by near infrared spectroscopy coupled with chemometrics.

Author information

1
Department of Food and Drug, University of Parma, Strada del Taglio 10, 43126 Parma, Italy. Electronic address: sergio.ghidini@unipr.it.
2
Department of Food and Drug, University of Parma, Strada del Taglio 10, 43126 Parma, Italy. Electronic address: mariaolga.varra@studenti.unipr.it.
3
Department of Food and Drug, University of Parma, Strada del Taglio 10, 43126 Parma, Italy. Electronic address: chiara.dellasta@unipr.it.
4
Department of Veterinary Medical Science, University of Bologna, Via Tolara di Sopra 50, 40064 Ozzano dell'Emilia, Bologna, Italy. Electronic address: anna.badiani@unibo.it.
5
Department of Food and Drug, University of Parma, Strada del Taglio 10, 43126 Parma, Italy. Electronic address: adriana.ianieri@unipr.it.
6
Department of Food and Drug, University of Parma, Strada del Taglio 10, 43126 Parma, Italy. Electronic address: emanuela.zanardi@unipr.it.

Abstract

Chemometric analysis of near-infrared spectroscopy (NIRS) data was applied to investigate the possibility to rapidly authenticate European sea bass (Dicentrarchus labrax L.) according to production method (wild or farmed), rearing system (extensive, semi-intensive or intensive), and geographical origin (Western, Central or Eastern Mediterranean Sea). NIR spectra from 1100 to 2500 nm were subjected to an exploratory principal component analysis (PCA) followed by orthogonal partial last square-discriminant analysis (OPLS-DA) to develop classifiers able to distinguish samples according to the various conditions under study. Models provided a correct classification rate of 100% for both wild and farmed sea bass, and of 67%, 80%, 100% for extensively, semi-intensively, and intensively-reared subjects, respectively. As for geographical provenance, 100% of Eastern, 88% of Central and 85% of Western Mediterranean Sea samples were correctly discriminated. The successful results obtained confirmed suitability of chemometric analysis applied to NIRS data for fast authentication of European sea bass origin.

KEYWORDS:

Authentication; Chemometrics; European sea bass; Farming system; Geographical origin; NIR spectroscopy

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