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Authentication of fattening diet of Iberian pigs according to their volatile compounds profile from raw subcutaneous fat

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Abstract

The composition of volatile components of subcutaneous fat from Iberian pig has been studied. Purge and trap gas chromatography−mass spectrometry has been used. The composition of the volatile fraction of subcutaneous fat has been used for authentication purposes of different types of Iberian pig fat. Three types of this product have been considered, montanera, extensive cebo and intensive cebo. With classification purposes, several pattern recognition techniques have been applied. In order to find out possible tendencies in the sample distribution as well as the discriminant power of the variables, principal component analysis was applied as visualisation technique. Linear discriminant analysis (LDA) and soft independent modelling by class analogy (SIMCA) were used to obtain suitable classification models. LDA and SIMCA allowed the differentiation of three fattening diets by using the contents in 2,2,4,6,6-pentamethyl-heptane, m-xylene, 2,4-dimethyl-heptane, 6-methyl-tridecane, 1-methoxy-2-propanol, isopropyl alcohol, o-xylene, 3-ethyl-2,2-dimethyl-oxirane, 2,6-dimethyl-undecane, 3-methyl-3-pentanol and limonene.

Iberian pigs in outdoor rearing system (Montanera)

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Acknowledgements

The authors are grateful to the Designations of Origin “Los Pedroches” and “Jamón de Huelva” for the collaboration and given help. This study was supported by projects PET 2007_0015 and P08-AGR-03498.

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Authors and Affiliations

  1. Food Characterization and Quality Department, Instituto de la Grasa (C.S.I.C.), Avda. Padre García Tejero 4, 41012, Seville, Spain

    M. Narváez-Rivas & M. León-Camacho

  2. Department of Analytical Chemistry, Faculty of Chemistry, University of Seville, c/Profesor García González 1, 41012, Seville, Spain

    F. Pablos & J. M. Jurado

Authors
  1. M. Narváez-Rivas
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  2. F. Pablos
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  3. J. M. Jurado
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  4. M. León-Camacho
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Corresponding author

Correspondence to M. León-Camacho.

Additional information

Published in the special issue Chemometrics (VII Colloquium Chemiometricum Mediterraneum) with Guest Editors Marcelo Blanco, Juan M. Bosque-Sendra and Luis Cuadros-Rodríguez.

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Narváez-Rivas, M., Pablos, F., Jurado, J.M. et al. Authentication of fattening diet of Iberian pigs according to their volatile compounds profile from raw subcutaneous fat. Anal Bioanal Chem 399, 2115–2122 (2011). https://doi.org/10.1007/s00216-010-4387-z

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  • DOI: https://doi.org/10.1007/s00216-010-4387-z

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