IIMYC   23581
INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS
Unidad Ejecutora - UE
artículos
Título:
Ray liver oils obtained by different methodologies: characterization and refining
Autor/es:
AGUEDA MASSA; DANIELA LAMAS
Revista:
JOURNAL OF AQUATIC FOOD PRODUCT TECHNOLOGY
Editorial:
HAWORTH PRESS INC
Referencias:
Lugar: Philadelphia; Año: 2019 vol. 28 p. 555 - 569
ISSN:
1049-8850
Resumen:
Currently, the use of by-products generated from the fish processing is a relevant issue for the sustainable development of the fisheries. The main commercialized product of cartilaginous species, are the fins. However, their livers contain a high content of polyunsaturated fatty acids, mainly eicosapentaenoic acid and docosahexaenoic acid. These fatty acids have been exhaustively studied, due to the remarkable benefits of their use on human health. In the present work different methodologies were investigated to extract oil from liver of Zearaja flavorostris and Atlantoraja castelnaui . Enzyme-assisted processes, cold extractions and high temperatures were investigated. The extraction with enzymes was the most efficient, achieving a yield of around 85% in both species. The oils obtained presented physical-chemical and quality parameters suitable for its refined and commercialization. The fatty acid profile showed that the predominant fraction in both species corresponds to the polyunsaturated fatty acids of the Omega-3 series. The results suggests that the livers of the species studied can be used as a source of valuable oils, rich in polyunsaturated fatty acids as a viable alternative for the integral use of these resources.