Antioxidant refining and purifying method of fish oil

Abstract

The invention discloses an antioxidant refining and purifying method of fish oil, wherein the method comprises the following steps: S1, water washing pretreatment: adding water and compound protease into crude fish oil, heating and stirring, completing enzymolysis, carrying out heating enzyme deactivation treatment, adding a degumming agent for degumming treatment after enzyme deactivation treatment, adding an adsorbent and water into the crude fish oil, heating and stirring; and then adding an alkaline solution, heating and stirring again to finally obtain deacidified fish oil, removing fatty acid of a low-carbon chain part and remaining a high-carbon chain part, and repeatedly degumming and deacidifying for 2-3 times to obtain deacidified and degummed fish oil. The method has the beneficial effects that the fish oil is poured into a hydrotreating reaction box for hydrotreating, and nitrogen treatment is performed through a nitrogen treatment reaction box, so that fatty acid of 14-18 carbon chain segments of the fish oil is protected, the content of the fatty acid is increased, part of unsaturated fatty acid is reserved, hydrogenation is combined with nitridation, and the refining process can be stable.

Description

technical field [0001] The invention relates to the technical field of fish oil, in particular to an antioxidant refining and purification method of fish oil. Background technique [0002] Deep-sea fish oil is rich in highly unsaturated fatty acids with important physiological activities, which is very different from other vegetable oils. Which is rich in anti-thrombotic EPA and DHA known as brain gold. It is precisely because of its high unsaturated fatty acids that refined deep-sea fish oil is prone to oxidation and produces a fishy smell. There is still a lack of good means to produce a kind of deep-sea fish oil without fishy smell. The traditional production technology is relatively simple, such as direct extraction and filtration, cooking method, and solvent extraction. Most of the existing technologies are ethyl esterification and then refining to obtain higher EPA and DHA are also refined by partial hydrogenation. Since fish oil is mostly used in food, the current t...

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Problems solved by technology

[0003] The main purpose of the present invention is to provide an anti-oxidation refining and purification method for fish oil, which can effectively solve the problem of fish oil in the background technology. Because fish oil is mostly used in food, the current technology is mostly used to obtain DHA with a higher content. Due to the fishy smell of fish oil itself, deep Brown color, precipitation, easy to oxidize and change odor, it is difficult to add in skin care products, and the purpose of using fish oil in skin care products is not only DHA and EPA, so other ingredients can be used in skin care products is the most important question

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