Method for extracting krill oil from antarctic krill

An Antarctic krill and krill oil technology, which is applied in the production of fat oil/fat and fat production, can solve the problems of complex process, waste of energy and energy requirement, and achieve the effect of improving extraction rate, saving energy and increasing crushing.

Active Publication Date: 2013-05-08
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 Antarctic krill is caught, heat it in water at 80°C±3°C for 10 minutes;

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

[0024] (3) Pulverization: after drying, the Antarctic krill is pulverized to 80 mesh krill powder, and the pulverization time is 5 minutes;

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

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

[0027] (6) Extraction: Soak and extract the krill powder suspension after shearing and extraction, separate the extract, and then extract the krill powder 1 time altogether. The solid-to-liquid...

Embodiment 2

[0030] (1) Heating: After 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 separated Antarctic krill after heating; the vacuum drying temperature is 89°C, and the vacuum degree is -0.1MPa;

[0032] (3) Pulverization: pulverize the dried Antarctic krill to 80 mesh, and the pulverization 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 shear 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 shear extraction, separate the extract, and then extract the separated krill powder once, the solid-to-l...

Embodiment 3

[0038] (1) Heating: After Antarctic krill is caught, heat it in hot water at 60°C for 20 minutes;

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

[0040] (3) Pulverization: pulverize the dried Antarctic krill to 30 mesh, and the pulverization time is 3 minutes;

[0041] (4) Soaking: Soak the krill meal at 30°C with 97% ethanol solution, the solid-liquid ratio is 1:10, and the time is 0.5 hour;

[0042] (5) Shearing: The krill powder suspension after soaking is sheared and extracted twice with a shearing emulsifier. The first shearing speed is 6000rpm, and the shearing time is 5 minutes. It is 10000rpm, and the shearing time is 5 minutes;

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

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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 by immersing in an organic solvent from krill powder formed by heating and drying fresh Antarctic krill just after fishing, especially a method for extracting krill oil rich in high phospholipid content. Background technique [0002] Antarctic krill is a kind of crustacean plankton mainly distributed in the Southern Ocean, and its reserves are astonishing, about 600-1000 million tons. The fat in Antarctic krill accounts for about 2% to 4% of the wet weight. Main fatty acid types and contents include: DHA9.3%~14.2%, EPA15.0%~20.5%, linoleic acid 2.4%~3.8%, linolenic acid 1.3%~3.7%, palmitic acid 21.1%~23.2%, etc. Saturated fatty acids make up the majority. The autolytic enzymes in Antarctic krill can be inactivated by heating to inactivate the enzyme, preventing Antarctic krill from degrading itself. Krill oil rich in phospholipids plays an important role in improving memory, preventing Alzhe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B1/02
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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