Reprocessing of ethyl ester light fraction by ProQuest


The health-promoting properties of polyunsaturated fatty acids (PUFA) account for the increasing popularity in the food industry of omega-3 concentrates based on fish oil. Their applications range from dietary ingredients up to pharmaceutical preparations. Usually, high-quality fish oils with high concentrations of PUFA, such as eicosapentaenoic acid (EPA) or docosahexaenoic acid (DHA), are used as raw material for this production process. With concentrations of approximately 30% in EPA and DHA, such high-quality fish oils are used as starting material for the production of omega-3 ethyl ester (EE) and triglyceride concentrates. However, since the quantities of these high-quality fish oils are limited, there is an increasing trend to use fish oils with considerably lower concentrations of omega-3 fatty acids as starting materials. To increase the cost effectiveness of such plants, the by-products of the concentration step of the EE phase can be used to produce a biogenic fuel that meets the quality requirements of the applicable ASTM biodiesel standard. [PUBLICATION ABSTRACT]

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