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Method for extracting phospholipid-rich krill oil from antarctic krills

An Antarctic krill, phospholipid-rich technology, applied in the direction of oil/fat production, fat production, etc., can solve problems such as poor stability, and achieve large-scale industrial production, improve stability, and improve comprehensive utilization. Effect

Inactive Publication Date: 2012-12-12
辽渔集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dalian Ocean Fishery Group Co., Ltd. applied for a patent (CN102405988A) for extracting krill oil with high phospholipid content from krill in 2011. The phospholipid content of the extracted krill oil reached 40% to 45%, but the acid value of the extracted krill oil Higher, more than 30 mgKOH / g, higher protein content, more than 15%, the stability is not very good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Heating: Antarctic krill is boiled and heated at 80°C for 10 minutes;

[0019] (2) Soaking: soak the heated Antarctic krill in sodium acetate solution for 0.5 hours, the mass volume ratio of Antarctic krill to the solution is 1:10, the concentration used in the solution is 1%, and the soaking process temperature is 20°C;

[0020] (3) Washing: wash the soaked Antarctic krill until neutral;

[0021] (4) Drying: Freeze-dry the washed Antarctic krill at -50°C;

[0022] (5) Crushing: after drying, the Antarctic krill is crushed to 80 mesh krill powder, and the crushing time is 1 minute;

[0023] (6) Extraction: Extract the pulverized krill meal with 95% ethanol solution organic solvent at 30°C, the mass volume ratio of Antarctic krill to solvent is 1:5, and the extraction time is 6 hours ;

[0024] (7) Solid-liquid separation: centrifuge the solid and liquid in the leached solution;

[0025] （ 8) Distillation under reduced pressure: distill the extract at 60°C and ...

Embodiment 2

[0027] (1) Heating: Antarctic krill is boiled and heated at 100°C for 5 minutes;

[0028] (2) Soaking: soak the heated Antarctic krill in sodium ascorbate solution for 1 hour, the mass volume ratio of Antarctic krill to the solution is 1:5, the concentration used in the solution is 1%, and the soaking process temperature is 15°C;

[0029] (3) Washing: wash the soaked Antarctic krill until neutral;

[0030] (4) Drying: Freeze-dry the washed Antarctic krill at -50°C;

[0031] (5) Crushing: after drying, the Antarctic krill is crushed to 50 mesh krill powder, and the crushing time is 5 minutes;

[0032] (6) Extraction: extract the pulverized krill powder with an organic solvent of ethanol solution with a concentration of 95% at 30°C, the mass volume ratio of Antarctic krill to solvent is 1:10, and the extraction time is 4 hours ;

[0033] (7) Solid-liquid separation: filter and separate the solid and liquid in the leached solution;

[0034] (8) Distillation under reduced pre...

Embodiment 3

[0036] (1) Heating: Antarctic krill is boiled and heated at 95°C for 8 minutes;

[0037] (2) Soaking: Soak the heated Antarctic krill in trisodium citrate solution for 2 hours, the mass volume ratio of Antarctic krill to the solution is 1:10, the concentration used in the solution is 0.25%, the soaking process The temperature is 20°C;

[0038] (3) Washing: wash the soaked Antarctic krill until neutral;

[0039] (4) Drying: The washed Antarctic krill is dried by electric blast at 40°C;

[0040] (5) Crushing: after drying, the Antarctic krill is crushed to 20 mesh krill powder, and the crushing time is 5 minutes;

[0041] (6) Extraction: The pulverized krill powder is extracted with an organic solvent of ethanol solution with a concentration of 98% at 10°C. The mass volume ratio of Antarctic krill to solvent is 1:10, and the extraction time is 6 hours. ;

[0042] (7) Solid-liquid separation: filter and separate the solid and liquid in the leached solution;

[0043] (8) Distil...

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Abstract

Disclosed is a method for extracting phospholipid-rich krill oil from antarctic krills. The method includes utilizing antarctic krills as raw materials, performing pretreatment process of raw materials such as heating to deactivate enzyme and sterilize and soaking in alkali solution, extracting krill powder with organic solvent after removing moisture, drying and smashing, separating solid and liquid, depressurizing and distilling extracting solution separated, and removing residual organic solvent to obtain antarctic krill oil containing more than 45% of phospholipid. The method for extracting phospholipid-rich krill oil from the antarctic krills is simple to operate, finished products are high in phospholipid content, low in acid value and fine in liquidity, stability of the phospholipid oil is improved, fat quality is improved, and comprehensive utilization rate of the antarctic krills is greatly increased. Besides, the method is low in cost, safe and environment-friendly and can be used as the simplest and most feasible method for extracting oil fat, especially oil fat rich in phospholipid in the antarctic krills.

Description

technical field [0001] The invention relates to a method for extracting krill oil from Antarctic krill, in particular to a method for extracting krill oil rich in high phospholipid content. Background technique [0002] Antarctic krill is one of the biological species with the largest resources on the earth. According to statistics, the biomass of Antarctic krill resources is conservatively estimated to be about 650 to 1 billion tons. Antarctic krill has attracted increasing attention because of its huge biological reserves, high nutritional value and special status in the Antarctic ecosystem. Antarctic krill not only contains a large amount of high-quality protein, but also contains lipids accounting for about 2% to 5% of wet weight. The content of phospholipids in lipids is relatively high, and it contains more omega-3 series polyunsaturated fatty acids, mainly Fatty acid types include: DHA9.3% ~ 14.2%, EPA15.0% ~ 20.5%, linoleic acid 2.4% ~ 3.8%, linolenic acid 1.3% ~ 3....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/10C11B1/02
Inventor 胥亚夫王元好余奕珂李宣延刘建君于龙苏学锋王嘉麒冯迪娜刘洋
Owner 辽渔集团有限公司
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