Deposition of conjugated linoleic acid in market size sea bass (Dicentrarchus labrax) and its effects on performance, composition and fillet sensory and texture attributes

作者：Makol A^*; Torrecillas S; Fernandez Vaquero A; Rincon L; Gines R; Izquierdo M

来源：Aquaculture Nutrition, 2013, 19(5): 785-797.

DOI：10.1111/anu.12025

• conjugated linoleic acid
• Dicentrarchus labrax
• fatty acids
• sea bass
• sensory
• texture

The effect conjugated linoleic acid (CLA) accumulation in fish fillet on sensory and texture attributes has been evaluated. Fish were fed diets with graded levels of CLA, which were administered for different durations prior to harvest. Fish were sampled for fillet proximate composition and fatty acid profile for sensory and texture parameters at the end of the trial. Growth performance, feed conversion ratio and muscle proximate composition were not affected by dietary treatments. Muscle fatty acid profile was not affected by dietary treatments despite the increase in saturated fatty acids in fish fed diet with 10gkg(-1) of CLA for 16weeks before harvest. Besides, the deposition levels of CLA isomers increased gradually depending on the CLA treatment, reaching its maximum level in fish fed 10gkg(-1) CLA diet for 20weeks before harvest. Fish fed 10gkg(-1) were juicier (P<0.05) compared with control group, whereas fish fed 5gkg(-1) CLA diet were less (P<0.05) chewy than fish fed control diet regarding sensory attributes. Texture parameters were not significantly affected by dietary CLA. These results suggest that market size European sea bass could successfully incorporate CLA isomers with some minor positive effects on sensory analyses.

• 出版日期2013-10