Method for extracting high-quality krill oil from krill
A krill oil, high-quality technology, applied in the production of fat oil/fat, refining of fat oil/fat, and fat production, can solve the problems of easy adsorption of phospholipids, loss of effective components, etc., to achieve simple operation of the preparation process and improved storage stability Effect
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[0041] Example 1. Krill oil extraction process and optimization without alkali addition
[0042] The method for preparing krill oil from Antarctic krill meal comprises the following steps:
[0043] S1, Antarctic krill powder is extracted by organic solvent (ethanol) countercurrently to obtain an extract;
[0044] S2, the extracting solution obtained in step S1 is distilled under reduced pressure to obtain a concentrated solution;
[0045] S3, in the concentrated solution of step S2, add purified water to refine, fully mix and then let stand until layering, and collect the lower layer crude oil;
[0046] S4, the lower layer crude oil of step S3 is mixed with dehydrated alcohol and left to stand, filtered, and the lysate is retained;
[0047] S5. The dissolving solution in step S4 is heated and decompressed and distilled for desolvation to obtain purified and refined krill oil.
[0048] In step S1, the water content and ethanol concentration in the krill meal will affect the ...
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[0072] Embodiment 2, alkali addition and deacidification and process optimization
[0073] Using Antarctic krill meal as raw material, extract according to the method of Example 1, the difference is: replace water with alkaline water, concentrate the Antarctic krill extract to a solid content of 10% to 20%, add the concentrated solution Alkali water with a mass of 0.5 to 0.9 times (in terms of water), stir for 1 hour, the stirring temperature is 25 ° C ~ 60 ° C, and the stirring speed is 400-1000 rpm / min; In anhydrous ethanol, filtered; the filtrate was desolvated in vacuum to obtain refined Antarctic krill oil.
[0074] The preparation of the alkaline water: sodium carbonate (soda ash) or sodium hydroxide (caustic soda) is dissolved in deionized water for preparation; the actual addition amount of caustic soda is 0.9 to 1.2 times the theoretical addition amount of caustic soda, and the actual addition amount of soda ash is the theoretical addition amount of caustic soda 0.5 ...
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