Incorporation and fatty acid composition in liver of Nile tilapia fed with flaxseed oil - doi: 10.4025/actascitechnol.v33i2.7970
One of the most consumed freshwater fish in South America is Nile tilapia. The present study examined the effects of flaxseed oil (FO), source of alfa-linolenic acid (LNA), on the total lipid composition and polyunsaturated fatty acid, n-6 and n-3 PUFA, contents on Nile tilapia (Oreochromis niloticu...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2011 |
| País: | Brasil |
| Institución: | Universidade Estadual de Maringá (UEM) |
| Repositorio: | Acta scientiarum. Technology (Online) |
| Idioma: | portugués inglés |
| OAI Identifier: | oai:periodicos.uem.br/ojs:article/7970 |
| Acceso en línea: | http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/7970 |
| Access Level: | acceso abierto |
| Palabra clave: | fatty acids manipulation lipids Omega-3 Química Analítica |
| Sumario: | One of the most consumed freshwater fish in South America is Nile tilapia. The present study examined the effects of flaxseed oil (FO), source of alfa-linolenic acid (LNA), on the total lipid composition and polyunsaturated fatty acid, n-6 and n-3 PUFA, contents on Nile tilapia (Oreochromis niloticus) liver. Tilapias were given diets with increasing levels 0.00, 1.2, 2.50, 3.75 and 5.00% (w w-1) of FO as a replacement of sunflower oil for five months. Fatty acids analysis of methyl esters revealed 45 fatty acids common to all treatments. The increase of flaxseed oil resulted in a decrease in total n-6 PUFA (35.1 to 21.1%) and an increase in n-3 PUFA (3.3 to 18.5%). The diet with LNA underwent sequential desaturation and elongation in liver, leading to an increase in all n-3 PUFA and a decrease in n-6/n-3 ratios (10.7 to 1.1). The manipulation of fatty acids with FO may be used to increase n-3 PUFA and to help balance n-6/n-3 PUFA in dietary supplements, thus, the liver tilapia becomes one product with major nutritional value. |
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