Performance de mesure de la composition en acides gras de la bavette de flanchet par spectroscopie proche infrarouge

Guillaume Mairesse (1) , Emmanuelle Certenais (1) , Jérôme Normand (2) , Benoît-Pierre Mourot (3, 1) , Agnes Thomas (3) , Dominique Gruffat (3) , Christophe Guillon (4) , Ronan Le Page (5) , Nathalie Kerhoas (6) , Guillaume Chesneau (6)

1 Valorex SAS
2 Service Qualité des Viandes
3 UMRH - Unité Mixte de Recherche sur les Herbivores - UMR 1213
4 Terrena
5 FOTON - Fonctions Optiques pour les Technologies de l'informatiON
6 Association Bleu-Blanc-Coeur

The aim of the study was to test the prediction performance of the fatty acid (FA) composition of beef (Rectus abdominis, RA) with a NIRS (near infrared spectroscopy) equipment. In order to have a representative database of French beef FA composition, 364 RA were sampled on carcasses from different rearing systems (dairy or beef ; young bulls, cows, steers or heifers ; pasture, hay or corn silage with or without extruded linseed concentrates). FA composition was assessed using gas chromatography and spectra were measured at wavelengths between 400 and 2500nm. The results show that NIRS accurately predicts several individual FA (16:0, 18:1d9cis) and FA groups (total saturated, monounsaturated FA) (RPD>2.0). For other FA and especially polyunsaturated fatty acids (PUFA) n-6 or n- 3, the performances should still be improved for quantitative purposes.

Mots clés: spectroscopy; gas chromatography; near-infrared

Mots clés: composition en acide gras; spectroscopie proche infrarouge; chromatographie en phase gazeuse

Domaines: Sciences du Vivant [q-bio]

Guillaume Mairesse, Emmanuelle Certenais, Jérôme Normand, Benoît-Pierre Mourot, Agnes Thomas, et al.. Performance de mesure de la composition en acides gras de la bavette de flanchet par spectroscopie proche infrarouge. 16èmes Journées Sciences du Muscle et Technologies des Viandes (16èmes JSMTV), Nov 2016, Paris, France. pp.71-72. ⟨hal-01603389⟩