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Extraction, Processing, and Stabilization of Health-Promoting Fish Oils

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Fish oil is known to be an important source of highly unsaturated n-3 polyunsaturated fatty acids (PUFA) such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), which play an important role in the prevention of different human diseases. Fortification of foods with such fatty acids is, thus, increasingly recommended. A growing public awareness about the benefits and the limited dietary sources of PUFA has created a substantial interest in the production of PUFA concentrate. Thus, ecofriendly extraction and purification techniques, exhibiting higher yield and minimum degradation of the nutrient, are of prime focus among the researchers. Due to the presence of these highly unsaturated PUFA, fish oil is highly prone to oxidation, leading to the production of off-odors and off-flavors. Presently, synthetic antioxidants have been replaced by natural ones for stabilizing the fish oil against oxidation. This article reviews major research and patents that have been published on fish oil extraction, purification and its stability.
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Keywords: Extraction; PUFA; fish offal; fish oils; liver oil; processing; purification; stabilization

Document Type: Research Article

Publication date: August 1, 2012

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  • Recent Patents on Food, Nutrition & Agriculture publishes review and research articles, and guest edited thematic issues on recent patents in all fields of food science & technology, nutrition and agricultural science & technology. A selection of important and recent patents in the areas covered is also included in the journal. The journal is essential reading for all researchers involved in food, nutrition and agricultural sciences and technology. The journal also covers recent research (where patents have been registered) in fast emerging technologies related to food additives, micro & macro-molecular food supplements, edible alternatives, food technology, nutraceuticals, healthy diet, nutritional value, calorie intake, malnutrition & related diseases, plant derivatives, agricultural technology and products, crop improvement and safety issues related to food, nutrition & agriculture.
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