Abstract
Gamma-linolenic acid (GLA) plays an important role in the prevention and/or treatment of certain diseases. In this work, we investigate the incorporation of GLA from supplemented feed diets with borage oil (BO) and evening primrose oil (EPO) as substitutes for soybean oil (SO) into the composition of tilapia fillet lipids. High contents of PUFA and n-6 fatty acids were quantified in fish fillet after 30 days of treatment with SO, BO, and EPO. Feed diets containing BO and EPO were efficient in the incorporation of GLA into fish. Compared to the initial day of the experiment, the increase of GLA was significant (from 6.43 to 13.99 and 15.12 mg g−1, in lipids of fish treated for 30 days with BO and EPO, respectively). The increase of GLA was also observed in fish which were fed with SO diet (6.43–11.43 mg g−1). Principal component analysis (PCA) allowed the separation of the treatments and discriminated BO and EPO in a group of fish that received the GLA supplemented diet. In addition to GLA, n-3 fatty acids were important in the characterization of SO diet and affected the separation of BO and EPO from SO in the PCA score plot.
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Schneider, V.V.A., Carbonera, F., Lopes, A.P. et al. Effect of Dietary Replacement of Soybean Oil with Different Sources of Gamma-Linolenic Acid on Fatty Acid Composition of Nile Tilapia. J Am Oil Chem Soc 92, 225–231 (2015). https://doi.org/10.1007/s11746-014-2586-z
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DOI: https://doi.org/10.1007/s11746-014-2586-z