Method for extracting krill oil from antarctic krill

A technology of Antarctic krill and krill oil, which is applied in the direction of fat oil/fat production and fat generation, can solve the problems of energy consumption, waste of energy, complex process, etc., and achieve energy saving, improvement of extraction rate, and improvement of dissolution and separation Effect

Active Publication Date: 2012-06-13
辽渔南极磷虾科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is to use frozen krill, which needs to be thawed and heated up, and then heat-preserved and autolyzed after thawing, and then heated and kept warm, which requires energy, and then cooled and dried. energy, the process is complex, waste of energy,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Heating: After the Antarctic krill is caught, it is heated in 80℃±3℃ water for 10 minutes;

[0023] (2) Drying: Vacuum drying the Antarctic krill separated after heating; the vacuum drying temperature is 60°C, and the vacuum degree is -0.05MPa;

[0024] (3) Crushing: After drying, the Antarctic krill is crushed to 80 mesh krill powder, and the crushing time is 5 minutes;

[0025] (4) Soaking: Soak the krill powder in a 95% ethanol solution at 30°C, with a solid-liquid ratio of 1:8, and a time of 2 hours;

[0026] (5) Shearing: After soaking, the krill powder suspension was sheared and extracted twice with a shearing emulsifier. The first shearing speed was 6000rpm, the shearing time was 5 minutes, and the second shearing speed was 7000rpm. , The cutting time is 5 minutes;

[0027] (6) Extraction: Soak and extract the krill powder suspension after shearing, separate the extract, and then extract the krill powder once. The solid-liquid ratio of krill powder to 95% ethanol solu...

Embodiment 2

[0030] (1) Heating: After the Antarctic krill is caught, it is heated in boiling water at a temperature of 100°C, and the heating time is 9 minutes;

[0031] (2) Drying: drying the Antarctic krill separated after heating; the vacuum drying temperature is 89°C, and the vacuum degree is -0.1MPa;

[0032] (3) Crushing: crush the dried Antarctic krill, crush to 80 mesh, crushing time is 5 minutes;

[0033] (4) Soaking: Soak the krill powder with 99% ethanol solution at 30°C, the solid-liquid ratio is 1:8, and the time is 2 hours;

[0034] (5) Shearing: After soaking, the krill powder suspension is sheared and extracted twice with a shearing emulsifier. The first shearing speed is 10000rpm, the shearing time is 5 minutes, and the second shearing speed is 4000rpm. , The cutting time is 5 minutes;

[0035] (6) Extraction: Soak and extract the krill powder suspension after shearing, separate the extract, and then extract the separated krill powder once. The solid-liquid ratio of the krill powd...

Embodiment 3

[0038] (1) Heating: After the Antarctic krill is caught, it is heated in hot water at 60°C, and the heating time is 20 minutes;

[0039] (2) Drying: drying the Antarctic krill separated after heating; the drying temperature is 40°C, and the vacuum degree is -0.1MPa;

[0040] (3) Crushing: Crush the dried Antarctic krill, crush to 30 mesh, and crush time is 3 minutes;

[0041] (4) Soaking: Soak the krill powder in a 97% ethanol solution at 30°C, with a solid-liquid ratio of 1:10, and a time of 0.5 hours;

[0042] (5) Shearing: Use a shearing emulsifier to shear and extract the soaked krill powder suspension twice, the first shearing speed is 6000rpm, the shearing time is 5 minutes, and the second shearing speed 10000rpm, shearing time is 5 minutes;

[0043] (6) Extraction: Soak and extract the krill powder suspension after shearing, separate the extract, and then extract the Antarctic krill powder 3 times. The solid-liquid ratio of krill powder to 97% ethanol solution is 1: 2. Stir and...

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Abstract

The invention relates to a method for extracting krill oil from antarctic krill. The method comprises: heating the captured antarctic krill for 3-20 minutes at a temperature of 60-100 DEG C; drying the antarctic krill, wherein the drying temperature is 60-89 DEG C; crushing the dried antarctic krill into the krill powder with the particle size of 30-100 meshes; adopting an ethanol solution with the concentration more than 95% to soak the krill powder at the temperature of 4-30 DEG C, wherein a solid/liquid ratio is 1:2-1:10, and the time is 0.5-2 hours; carrying out shear extraction on the soaked suspension liquid by using a shearing emulsifying machine, and carrying out standing or stirring extraction on the resulting suspension liquid after the shear extraction; separating the extracting solution, and carrying out extracting separation on the extracting solution 2-4 times; and evaporating the resulting extracted solution at the temperature of 30-60 DEG C and under the vacuum degree of from -0.05 to -0.1 MPa to remove the organic solvent in the extracted solution to obtain the antarctic krill oil with the phospholipid content of 40-45%. According to the present invention, the operation of the method of the present invention is simple, the phospholipid content of the final product is high, and the method can be used as the most simple and feasible method for extracting the greases, and especially the phospholipid-rich greases.

Description

Technical field [0001] The invention relates to a method for extracting krill oil from krill powder formed by heating and drying fresh Antarctic krill just after fishing, and particularly to an extraction method for extracting krill oil with high phospholipid content by soaking in an organic solvent. Background technique [0002] Antarctic krill is a crustacean plankton mainly distributed in the Southern Ocean, and its reserves are very staggering, about 600 to 1 billion tons. Fat in Antarctic krill accounts for about 2% to 4% of wet weight. The main fatty acid types and content include: DHA 9.3% to 14.2%, EPA 15.0% to 20.5%, linoleic acid 2.4% to 3.8%, linoleic acid 1.3% to 3.7%, palmitic acid 21.1% to 23.2%, etc. Saturated fatty acids account for the majority. The autolyzed enzymes in Antarctic krill can be inactivated by heating to inactivate the enzymes, and the self-degradation of Antarctic krill can be prevented. Krill oil rich in phospholipids has an important role in i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/02C11B1/10
Inventor 刘建君肖成立苏学锋王元好余奕珂
Owner 辽渔南极磷虾科技发展有限公司
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