Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/2029
Título: Lipid content and fatty acid profile of Senegalese sole (Solea senegalensis Kaup, 1858) juveniles as affected by feed containing different amounts of plant protein sources
Autor: Fernandes, Telmo J. R.
Alves, Rita C.
Souza, Tiago
Silva, J. M. G.
Castro-Cunha, M.
Valente, Luísa M.P.
Oliveira, M. Beatriz P. P.
Palavras-chave: Senegalese sole
Plant-protein experimental diets
Lipid content
FA profile
Data: 2012
Editora: Elsevier
Relatório da Série N.º: Food Chemistry; Vol. 134, Issue 3
Resumo: A growth trial with Senegalese Sole (Solea senegalensis Kaup, 1858) juveniles fed with diets containing increasing replacement levels of fishmeal by mixtures of plant protein sources was conducted over 12 weeks. Total fat contents of muscle, liver, viscera, skin, fins and head tissues were determined, as well as fatty acid profiles of muscle and liver (GC-FID analysis). Liver was the preferential local for fat deposition (5.5–10.8% of fat) followed by fins (3.4–6.7% fat). Increasing levels of plant protein in the diets seems to be related to increased levels of total lipids in the liver. Sole muscle is lean (2.4–4.0% fat), with total lipids being similar among treatments. Liver fatty acid profile varied significantly among treatments. Plant protein diets induced increased levels of C16:1 and C18:2 n -6 and a decrease in ARA and EPA levels. Muscle fatty acid profile also evidenced increasing levels of C18:2 n 6, while ARA and DHA remained similar among treatments. Substitution of fishmeal by plant protein is hence possible without major differences on the lipid content and fatty acid profile of the main edible portion of the fish – the muscle.
Peer review: yes
URI: http://hdl.handle.net/10400.22/2029
ISSN: 0308-8146
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0308814612004864
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