Determination of neophytadiene in the subcutaneous fat of Iberian pigs from different feeding systems


  • A. Hernández-Matamoros Food Technology and Biochemistry, Escuela de Ingenierías Agrarias, Universidad de Extremadura
  • E. González Animal Production, Escuela de Ingenierías Agrarias, Universidad de Extremadura
  • J. M. García-Casco Centro de I+D en Cerdo Ibérico – INIA
  • J. F. Tejeda Food Technology and Biochemistry, Escuela de Ingenierías Agrarias, Universidad de Extremadura



Classification, Feeding, Iberian pig, Neophytadiene, Subcutaneous fat


This study was carried out in order to determine the relationship between the content of a branched hydrocarbon (neophytadiene) in the subcutaneous fat and the feeding system of Iberian pigs during the fattening period previous to slaughter. Thirty-six batches of Iberian pigs, belonging to the four categories of feeding systems described in the Spanish legislation (Bellota, Recebo, Campo and Cebo) were studied. These categories differ in their degree of utilization of the natural resources (acorn and pasture) of the extensive rearing system or in their level of replacement by concentrated feed. SPE combined with GC-MS techniques were carried out to isolate and to identify hydrocarbons. Recebo and Bellota batches showed the highest levels of neophytadiene content, followed by Campo batches, and finally, batches of the Cebo category. The results showed a great variability between batches from the same feeding category, mainly from Bellota, Recebo and Campo categories, which makes the classification of the animals in these three categories difficult. However, the animals from the Cebo category were correctly classified when reared in intensive conditions.


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How to Cite

Hernández-Matamoros A, González E, García-Casco JM, Tejeda JF. Determination of neophytadiene in the subcutaneous fat of Iberian pigs from different feeding systems. Grasas aceites [Internet]. 2013Jun.30 [cited 2024May26];64(2):173-80. Available from: