Volatiles in raw and cooked meat from lambs fed olive cake and linseed.
This study was conducted to determine the effects of feeding olive cake and linseed to lambs on the volatile organic compounds (VOCs) in raw and cooked meat. Four groups of eight male Appenninica lambs each were fed: conventional cereal-based concentrates (diet C), concentrates containing 20% on a dry matter (DM) basis of rolled linseed (diet L), concentrates containing 35% DM of stoned olive cake (diet OC), or concentrates containing both rolled linseed (10% DM) and stoned olive cake (17% DM; diet OCL). The longissimus dorsi muscle of each lamb was sampled at slaughter and was subjected to VOC profiling through the use of SPME-GC-MS. In the raw meat, the concentration of 3-methylpentanoic acid was higher in treatment C as compared with treatments L, OC and OCL (P<0.01). Moreover the level of nonanoic acid was greater in treatments C and OC than in treatment L (P<0.05). With respect to alcohols, in raw meat the amount of 2-phenoxyethanol in treatment OCL was lower than in treatments C (P<0.01) and OC (P<0.05), while in cooked meat the amount of 1-pentanol was higher in treatment C than in treatment OC (P<0.05). Apart from these compounds, none of the lipid oxidation-derived volatiles was significantly affected by the dietary treatment. Therefore, the results suggest that the replacement of cereal concentrates with linseed and/or olive cake did not cause appreciable changes in the production of volatile organic compounds in lamb meat.
1Di3A,Sezione di Scienze delle Produzioni Animali,University of Catania,Via Valdisavoia 5,95123 Catania,Italy.
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Gravador
2Dipartimento di Scienze Agrarie,Alimentari e Agro-Ambientali,University of Pisa,Via del Borghetto,80,56124 Pisa,Italy.
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Serra
1Di3A,Sezione di Scienze delle Produzioni Animali,University of Catania,Via Valdisavoia 5,95123 Catania,Italy.
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Luciano
1Di3A,Sezione di Scienze delle Produzioni Animali,University of Catania,Via Valdisavoia 5,95123 Catania,Italy.
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Pennisi
1Di3A,Sezione di Scienze delle Produzioni Animali,University of Catania,Via Valdisavoia 5,95123 Catania,Italy.
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Vasta
2Dipartimento di Scienze Agrarie,Alimentari e Agro-Ambientali,University of Pisa,Via del Borghetto,80,56124 Pisa,Italy.
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Mele
3DBA,Sezione di Scienze Zootecniche,University of Perugia,Borgo XX giugno,74,06121 Perugia,Italy.
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Pauselli
1Di3A,Sezione di Scienze delle Produzioni Animali,University of Catania,Via Valdisavoia 5,95123 Catania,Italy.
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Priolo
D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D003296:Cooking; D004032:Diet / Q000662:veterinary*; D019597:Flax; D008297:Male; D008460:Meat / Q000032:analysis*; D031658:Olea; D012756:Sheep
linseed