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Method of extracting Euphausia superba oil by using supercritical carbon dioxide

An Antarctic krill oil and carbon dioxide technology, which is applied in the production of fat oil/fat and fat production, can solve problems such as difficult to solve environmental and safety problems, and difficult to completely remove solvents, achieve stable quality, remove ethanol residues, and reduce ethanol consumption Effect

Inactive Publication Date: 2012-02-22
SHANDONG KERUIER BIOLOGICAL PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The organic solvent extraction method mostly uses acetone, ethyl acetate, etc. for extraction, and the extraction rate is high, but the residual solvent is difficult to completely remove, and there are environmental and safety problems in the production process that are difficult to solve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Antarctic krill is freeze-dried, pulverized and ground to obtain Antarctic krill powder (60 mesh) with a water content of 7%; take 100 g of Antarctic krill powder, spray 50 ml of absolute ethanol, stir well, soak for 1.5 hours and start supercritical Carbon dioxide extraction. Static extraction was carried out at an extraction temperature of 30° C. and an extraction pressure of 30 MPa. After 30 minutes, the temperature was raised to 45° C., and dynamic extraction was performed for 1.5 hours to obtain 13.7 g of Antarctic krill oil, with a yield of 13.7%.

[0013] The main components and contents of Antarctic krill oil are as follows:

[0014] Phospholipids: 40% EPA: 17.1% DHA: 10.7% Astaxanthin: 0.12%

Embodiment 2

[0016] Antarctic krill is freeze-dried, pulverized and ground to obtain Antarctic krill powder (60 mesh) with a water content of 5%; take 100 g of Antarctic krill powder, spray 50 ml of absolute ethanol, stir well, soak for 1 hour and start supercritical Carbon dioxide extraction. Static extraction was carried out at an extraction temperature of 28° C. and an extraction pressure of 25 MPa. After 25 minutes, the temperature was raised to 50° C., and dynamic extraction was performed for 1 hour to obtain 13.2 g of Antarctic krill oil, with a yield of 13.2%.

[0017] The main components and contents of Antarctic krill oil are as follows:

[0018] Phospholipids: 39.2% EPA: 17.3% DHA: 10.6% Astaxanthin: 0.12%

Embodiment 3

[0020] Antarctic krill is carried out heat-drying, pulverizes, grinds and obtains Antarctic krill powder (60 orders) of water content 8%; Get Antarctic krill powder 100g, spray dehydrated alcohol 50ml, stir evenly, begin to carry out ultra-thinning after soaking 2 hours. Critical carbon dioxide extraction. Static extraction was carried out at an extraction temperature of 25° C. and an extraction pressure of 32 MPa. After 40 minutes, the temperature was raised to 40° C., and dynamic extraction was performed for 2 hours to obtain 16.8 g of Antarctic krill oil, with a yield of 16.8%.

[0021] The main components and contents of Antarctic krill oil are as follows:

[0022] Phospholipids: 38.9% EPA: 16.8% DHA: 10.9% Astaxanthin: 0.13%

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PUM

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Abstract

The invention discloses a method of extracting Euphausia superba oil by using supercritical carbon dioxide. The method is as follows: freeze drying or heat drying is carried out on Euphausia superba, anhydrous ethanol is sprinkled after Euphausia superba is crushed and ground, uniform stirring is carried out, and supercritical carbon dioxide extraction is carried out after Euphausia superba is immersed for 1 to 2 h; flow for supercritical carbon dioxide extraction comprises the steps of standing and infiltrating Euphausia superba, carrying out static extraction for 20 to 40 m, heating an obtained extract to a temperature of 40 to 50 DEG C and carrying out dynamic extraction for 1 to 2 h. Yield of the Euphausia superba oil is 12 to 18%, and the obtained Euphausia superba oil mainly comprises, by weight, 37 to 43% of phosphatide, 13 to 18% of EPA (eicosapntemacnioc acid), 8 to 12% of DHA (docosahexaenoic acid) and 0.12 to 0.13% of astaxanthin. The method has the advantages of simple flow, stable quality, no harmful influence on environment in the process of extraction, safety and utility.

Description

technical field [0001] The invention relates to a method for extracting Antarctic krill oil from Antarctic krill, in particular to a method for preparing Antarctic krill oil by supercritical carbon dioxide extraction. It can be used in medicine, food, health products, feed, daily chemical industry and other industries. Background technique [0002] Antarctic krill (scientific name Euphausia superba), also known as giant krill or Antarctic krill, is a kind of krill that lives in the waters of Antarctica. The fat content of Antarctic krill accounts for 1%-6% of the wet weight. The main types of oil include: lecithin (PC) (33-36%), phosphatidylethanolamine (PE) (5-6%), triglycerides (TG) (33-40%), free fatty acid (FFA) (8-16%), astaxanthin, etc. Antarctic krill oil has obvious effects in delaying aging, lowering blood sugar, improving dyslipidemia, relieving dysmenorrhea, regulating physiological functions, etc.: it can promote brain function and prevent the occurrence of Alz...

Claims

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Application Information

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IPC IPC(8): C11B1/10C11B1/02
Inventor 赵福江王世立吴延青宋迪
Owner SHANDONG KERUIER BIOLOGICAL PRODS
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