PRODUCTION METHOD OF REFINED FISH OIL

摘要

PURPOSE: A method for producing refined fish oil by removing phospholipid from fish oil and adding powdered excretions of earthworm and acid clay to the fish oil is provided to remove the fish smell completely and preserve the oil for a long time stably. CONSTITUTION: The method includes the following steps of: (i) fermenting a heated and stirred mixture of fish oil, 50-70wt% of water and 10-30wt% of by-products of M.S.G, by the weight of the fish oil, with urea, steaming the fermented mixture at high temperature and separating water and phospholipid from the mixture; (ii) measuring acid value of the separated fish oil and neutralizing the fish oil with liquid caustic soda before washing with hot-water and vacuum drying the fish oil; (iii) heating and adsorbing the dehydrated fish oil to 0.2-0.5wt% of preprocessed earthworm excretion powder (150-200mesh) in a stirrer and reacting the fish oil at least 30deg.C for 0.5-1hr before adding acid clay to the fish oil absorbed to the earthworm excretion to absorb the pigment and filtrating the fish oil; (iv) vacuum deodorizing and cooling the decolored and filtrated fish oil with steam and filtrating the cooled fish oil before storing the resulting fish oil in an airtight container.