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Method for extracting phospholipid-enriched krill oil from Antarctic krill

An Antarctic krill, phospholipid-rich technology, applied in the direction of fat oil/fat production, fat production, etc., can solve the problems of low phospholipid content, difficulty in removing residual solvents, environmental and safety issues, and achieve high input-output ratio, The effect of safe raw material source and clear process

Inactive Publication Date: 2011-05-25
SHANDONG KERUIER BIOLOGICAL PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the patents on krill oil mainly include the extraction method patent (EP01417211B1) of Antarctic krill oil applied by Canadian NEPTUNE Company in 1998. It first dehydrates with acetone and extracts Antarctic krill oil, and then extracts it with ethyl acetate. Remaining Antarctic krill oil; Norway Aker company proposes Antarctic krill oil supercritical extraction method patent (426602), the shortcoming that these two patents all exist is, the removal of residual solvent in the method for extracting oil with acetone and ethyl acetate is difficult to complete , and there are also environmental and safety issues in the production process, and the phospholipid content of supercritically extracted Antarctic krill oil is relatively low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1), get frozen Antarctic krill 500g, pulverize to 20 orders with tissue pulverizer;

[0017] (2) Place the crushed Antarctic krill in a vacuum drying oven, adjust the temperature to 35° C., and keep the temperature for 60 minutes to autolyze the Antarctic krill;

[0018] (3), raise the temperature of vacuum drying oven to 95 ℃, keep warm for 10 minutes, make enzyme deactivation;

[0019] (4), start insulation after the temperature of vacuum drying box is dropped to 50 ℃, open vacuum compressor simultaneously, dry moisture to below 5%, get the dried Antarctic krill meal 90g;

[0020] (5), the dried Antarctic krill meal is placed in a 1000ml flask, and then 540g of ethanol with a mass percentage concentration greater than 95% is added to carry out a water bath reaction, the water bath temperature is 50°C, and the reaction time is 3 hours;

[0021] (6) Cool to room temperature, filter, take the solvent part and evaporate it with a rotary evaporator to obtain 11.5 g of re...

Embodiment 2

[0024] (1), get frozen Antarctic krill 500g, pulverize to 10 orders with tissue pulverizer;

[0025] (2) Place the crushed Antarctic krill in a vacuum drying oven, adjust the temperature to 50° C., and keep the temperature for 35 minutes to autolyze the Antarctic krill;

[0026] (3), raise the temperature of vacuum drying oven to 100 ℃, keep warm for 8 minutes, make enzyme inactivation;

[0027] (4), start insulation after the temperature of vacuum drying box is dropped to 45 ℃, open vacuum compressor simultaneously, dry moisture to below 5%, get dry Antarctic krill meal 85g;

[0028] (5), the dried Antarctic krill meal is placed in a 500ml flask, and then 170g of isopropanol with a mass percent concentration greater than 95% is added to carry out a water bath reaction. The temperature of the water bath is 40° C., and the reaction time is 4.5 hours;

[0029] (6), cooled to room temperature, filtered, and the solvent part was evaporated by a rotary evaporator to obtain 9.6 g o...

Embodiment 3

[0032] (1), get frozen Antarctic krill 500g, pulverize to 15 orders with tissue pulverizer;

[0033] (2) Place the pulverized Antarctic krill in a vacuum drying oven, adjust the temperature to 45° C., and keep the temperature for 45 minutes to autolyze the Antarctic krill;

[0034] (3), raise the temperature of vacuum drying oven to 90 ℃, keep warm for 15 minutes, make enzyme inactivation;

[0035] (4), start insulation after the temperature of vacuum drying box is dropped to 40 ℃, open vacuum compressor simultaneously, dry moisture to below 5%, get the dried Antarctic krill meal 92g;

[0036] (5) Place the dried Antarctic krill meal in a 1500ml flask, then add 920g of ethanol with a concentration greater than 95% for water bath reaction, the water bath temperature is 45°C, and the reaction time is 4 hours;

[0037] (6), cooled to room temperature, filtered, and the solvent part was evaporated by a rotary evaporator to obtain 11.2 g of reddish-brown Antarctic krill oil.

[0...

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Abstract

The invention discloses a method for extracting phospholipid-enriched krill oil from Antarctic krill. The method comprises the following steps: using Antarctic krill as the raw material and using the autologous protease to decompose the Antarctic krill and release lipids, quickly heating to inactivate the enzymes in the krill, drying at low temperature, and extracting krill oil with rich eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) phospholipids at low temperature by using low carbon alcohol as the solvent. The method disclosed by the invention is simple to operate, has the advantages of clear process and high input-output ratio; and compared with other organic solvents, ethanol or isopropanol is safer for storage, transportation and use, has abundant sources, and has obvious advantages of being used as the solvent for extracting oil of krill type crustacean.

Description

technical field [0001] The invention relates to a method for extracting oil from Antarctic krill, in particular to a method for extracting phospholipid-rich krill oil from Antarctic krill. Background technique [0002] Krill belongs to crustaceans and is the organism with the highest protein content. It is widely distributed in the Antarctic and the Arctic, and Antarctic krill is the most abundant resource. The fat content of Antarctic krill accounts for 1% to 6% of the wet weight. The main oil types and contents include: lecithin (PC) 33% to 36%, phosphatidylethanolamine (PE) 5% to 6%, triglyceride (TG) 33% to 40%, free fatty acid (FFA) 8% to 16%, and astaxanthin, etc. Antarctic krill oil can promote brain function and prevent the occurrence of Alzheimer's disease; it can lower serum cholesterol and prevent the deposition of cholesterol on the blood vessel wall, improve the absorption and utilization of fat, and play a role in preventing cardiovascular disease and preventi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/10C11B1/02C11B1/00
Inventor 吴延青赵传凯许虹雷赵静
Owner SHANDONG KERUIER BIOLOGICAL PRODS
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