Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10259/5092
Título
Detection of cold chain breaks using partial least squares-class modelling based on biogenic amine profiles in tuna
Autor
Publicado en
Talanta. 2019, V. 202, p. 443-451
Editorial
Elsevier
Fecha de publicación
2019-09
ISSN
0039-9140
DOI
10.1016/j.talanta.2019.04.072
Resumen
The maintenance of the cold chain is essential to ensure foodstuff conformity and safety. However, gaps in the cold chain may be expected so designing analytical methods capable to detect cold chain breaks is a worthwhile issue. In this paper, the possibility of using the amount of nine biogenic amines (BAs) determined in Thunnus albacares by HPLC-FLD for detecting cold chain breaks is approached. Tuna is stored at 3 different temperature conditions for 8 storage periods. The evolution of the content of BAs is analyzed through parallel factor analysis (PARAFAC), in such a way that storage temperature, BAs and storage time profiles are estimated. PARAFAC has made it possible to observe two spoilage routes with different relative evolution of BAs. In addition, it has enabled to estimate the storage time, by considering the three storage temperatures, with errors of 0.5 and 1.0 days in fitting and in prediction, respectively. Furthermore, a class-modelling technique based on partial least squares is sequentially applied to decide, from the amount of BAs, if there has been a cold chain break. Firstly, samples stored at 25 °C are statistically discriminated from those kept at 4 °C and −18 °C; next, frozen samples are distinguished from those refrigerated. In the first case, the probabilities of false non-compliance and false compliance are almost zero, whereas in the second one, both probabilities are 10%. Globally, the results of this work have pointed out the feasibility of using the amount of BAs together with PLS-CM to decide if the cold chain has been maintained or not.
Palabras clave
Biogenic amines
Cold chain
Partial least squares - class modelling
HPLC-FLD
Parallel factor analysis
Spoilage of tuna
Materia
Química analítica
Chemistry, Analytic
Versión del editor
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Documento(s) sujeto(s) a una licencia Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International