La spectroscopie proche infrarouge : outil d'analyse rapide sur carcasse de la teneur en acides gras polyinsaturés n‐3 des gras de bardière du porc charcutier  - Université de Rennes Accéder directement au contenu
Poster De Conférence Année : 2012

La spectroscopie proche infrarouge : outil d'analyse rapide sur carcasse de la teneur en acides gras polyinsaturés n‐3 des gras de bardière du porc charcutier 

Résumé

Near-infrared spectrometry : a rapid analytical tool for n-3 polyunsaturated fatty acid measurement on backfat of pig carcass A survey carried out by IFIP among slaughterhouses that are or are not engaged in strategies for improvingthe lipid profile of pork demonstrates the need for a tool for rapid and early determination of the fatty acid profile of a carcass. This work aims to develop models to predict the fatty acid composition, including n-3 polyunsaturated fatty acid (n-3 PUFA) from a near infrared spectroscopy (NIRS) measurement directly on the slaughter line. The infrared measurements were performed on 282 pigs, 50% coming from the Bleu-Blanc-Coeur label (that guarantees higher levels of n-3 PUFA). They were performed on the slaughter line on hot carcass and on the backfat, using a near infrared spectrometer (LabSpec 5000, ASD). The samples were collected and their fatty acid compositions were obtained using gas chromatography. The regression method employed was partial least squares (PLS). The results show that the spectral range 800-1830 nm provides the best predictions. The models developed for C18:3n-3, n-3 PUFA and total PUFA gave the best results (R²= 0.87, 0.86 and 0.86, respectively) with an associated uncertainty of 1.2, 1.5 and 2.8 points and average values of 2.4; 3.2; and 16.2, respectively. For all other fatty acids, the determination coefficients (R²) were lower than 0.75. The results show that it is possible to use NIRS to determine on the slaughter line the n-3 PUFA content of pigs and enable them to be sorted according to quality criteria of fat.
Fichier principal
Vignette du fichier
JRP_final_acceptA_.pdf (407.72 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00671506 , version 1 (23-02-2012)

Identifiants

  • HAL Id : hal-00671506 , version 1
  • PRODINRA : 317293

Citer

Guillaume Mairesse, Philippe Douzenel, Jacques Mourot, Antoine Vautier, Ronan Le Page, et al.. La spectroscopie proche infrarouge : outil d'analyse rapide sur carcasse de la teneur en acides gras polyinsaturés n‐3 des gras de bardière du porc charcutier . 44è Journées de la Recherche Porcine (JRP 2012), Feb 2012, Paris, France. IFIP - Institut du Porc, HAL (archives-ouvertes.fr), 44, pp.211-212, 2012, 44èmes Journées de la Recherche Porcine. ⟨hal-00671506⟩
454 Consultations
314 Téléchargements

Partager

Gmail Facebook X LinkedIn More