Abstract
Since the nutritional value of farm-raised fish fillets is directly related to the diet provided, we supplemented the diet of Tilapia (Oreochromis niloticus) with a blend of chia (Salvia hispanica L.) oil, tung (Aleurites fordii) oil, and conjugated linoleic acid (CLA) to evaluate the effects on the fatty acid composition. Vitamin E was also added to the diet to improve the antioxidant capacity of tilapia fillets. We observed an increase in α-linolenic acid content (from 6.56 to 19.03 mg g−1 of total lipids), as well as the incorporation of CLA and conjugated linolenic acid (CLnA) isomers in the fillets. The addition of vitamin E resulted in the antioxidant capacity improvement of the fillets and higher values were found after 15 feeding days (39.25 µmol TE g−1 in the Ferric Reducing Ability Power assay). Supplementation proved to be an excellent tool to improve the nutritional value of fish fillets.
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Abbreviations
- AA:
-
Arachidonic acid
- ABTS:
-
2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)
- CLA:
-
Conjugated linoleic acid
- CLnA:
-
Conjugated linolenic acid
- DHA:
-
Docosahexaenoic acid
- DPPH:
-
2,2-Diphenyl-1-picrylhydrazyl
- EPA:
-
Eicosapentaenoic acid
- ESA:
-
Eleostearic acid
- FAME:
-
Fatty acid methyl esters
- FRAP:
-
Ferric reducing ability power
- H-ORACFL :
-
Hydrophilic-oxygen radical absorbance capacity
- LA:
-
Linoleic acid
- LC-PUFA:
-
Long-chain polyunsaturated fatty acids
- LNA:
-
Alpha-linolenic acid
- L-ORACFL :
-
Lipophilic-oxygen radical absorbance capacity
- MUFA:
-
Monounsaturated fatty acids
- n-3:
-
Omega-3 fatty acids
- n-6:
-
Omega-6 fatty acids
- PUFA:
-
Polyunsaturated fatty acids
- RMCD:
-
Randomly methylated β-cyclodextrin
- SFA:
-
Saturated fatty acids
- TAC:
-
Total antioxidant capacity
- TE:
-
Trolox equivalent
- TL:
-
Total lipids
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Acknowledgments
The authors would like to thank Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) for a master fellowship, and WACKER Química do Brasil Ltd. for supplying the randomly methylated β-cyclodextrin (RMCD).
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Carbonera, F., Montanher, P.F., Figueiredo, I.L. et al. Lipid Composition and Antioxidant Capacity Evaluation in Tilapia Fillets Supplemented with a Blend of Oils and Vitamin E. J Am Oil Chem Soc 93, 1255–1264 (2016). https://doi.org/10.1007/s11746-016-2869-7
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DOI: https://doi.org/10.1007/s11746-016-2869-7