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Method for refining krill oil from Antarctic krill powder

An Antarctic krill meal and krill oil technology, which is applied in the direction of oil/fat refining, edible oil/fat, and oil/fat production, etc., can solve the problem of high organic solvent residue, low krill oil phospholipid content and low product extraction rate and other problems, to achieve the effect of high transparency, low impurity content and good fluidity

Inactive Publication Date: 2014-08-13
SHANDONG QIANQINGXIANGTAI BIOLOGICAL PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has the problems of low content of phospholipids, DHA, EPA and other unsaturated fatty acids, kastaxanthin, vitamin A, E, animal flavonoids, and trace elements in the extracted krill oil, and high residual organic solvents.
However, the supercritical carbon dioxide extraction method has the problem that the product extraction rate is low and the phospholipid content in the extracted krill oil is also relatively low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 11-113

[0036] Preparation of Krill Oil Crude Extract

[0037] (1) Take 1 portion of Antarctic krill powder and add 3-4 times the weight of food-grade ethanol with a mass concentration of M, put it into the extraction tank, soak it at room temperature for 2 hours, and then use graded filtration, and finally pass through the pore size of 0.45um filter to obtain the first extract and filter residue with an extract content of 3-5%. Add 3 times the weight of the food grade ethanol with a mass concentration of M to the filter residue again, soak at room temperature for 2 hours, then adopt graded filtration, and finally pass through a filter with a pore size of 0.45um to obtain the second extract and filter residue . Add 3 times the weight of the food grade ethanol with a mass concentration of M to the filter residue again, soak at room temperature for 2 hours, then adopt graded filtration, and finally pass through a filter with a pore size of 0.45um to obtain the third extract and fil...

Embodiment 2

[0045] Antarctic krill powder and edible grade 95% ethanol are continuously extracted at room temperature using countercurrent extraction equipment, the ratio of solid to liquid is controlled at 1:5-8, and the extraction time is 0.5-2 hours. The extracted liquid is krill oil crude Extraction. The crude krill oil extract was refined by using the method steps of "refined krill oil" in Examples 1.1-1.13 to obtain refined krill oil.

Embodiment 11

[0060] Embodiment 1.1 is optimal scheme;

[0061] Embodiment 1.2-1.4 Compared with embodiment 1.1, only the concentration of ethanol in step 1 changes. When the concentration of ethanol in embodiment 1.4 is lower than the range claimed by the present invention, the content of krill astaxanthin is low, and the fluidity of krill oil Very poor, poor transparency;

[0062] Embodiment 1.5-1.7 compared with embodiment 1.1, only the content of the extract in the concentrated extract in step 3 changes; Low, low content of krill astaxanthin, krill oil has poor fluidity and poor transparency;

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PUM

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Abstract

The invention relates to a method for refining krill oil from Antarctic krill powder, belonging to the technical field of deep processing of Antarctic krill. Acccording to the invention, the solvent ethanol and a small part of water in the extracting solution are removed not directly by one-step reduced pressure distillation, but are removed by the following steps: removing part of the solvent, adding deionized water, concentrating phospholipid, unsaturated fatty acids, krill astaxanthin and other effective substances by utilizing the characteristics of phospholipid, adding anhydrous ethanol to remove most of polysaccharides, proteins and salts, and finally, distilling under reduced pressure to remove the solvent and water. By using the refinement technique, the contents of the phospholipid DHA, EPA and other unsaturated fatty acids, astaxanthin and other effective components in the obtained krill oil are obviously enhanced, and the quality (flowability and transparency) of the obtained krill oil is obviously improved.

Description

technical field [0001] The invention relates to a method for refining krill oil from Antarctic krill powder, and belongs to the technical field of deep processing of Antarctic krill. Background technique [0002] Antarctic krill inhabits the Antarctic waters south of the Antarctic Convergence Zone and is a marine crustacean. It plays an important role in the food chain of the Southern Ocean, is food for seals, whales and penguins, and is an important marine living resource. Antarctic krill is full of treasures. It is rich in phospholipids, fatty acids, kastaxanthin, low-temperature active enzymes, bioactive peptides, chitin and other active substances, which can be widely used in medicine, chemical industry, agriculture, aquatic products and other fields. Krill is rich in biological resources, so its comprehensive and in-depth development and utilization are of great value. [0003] Krill oil extracted from Antarctic krill is rich in phospholipids combined with polyunsatur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/10C11B3/12A23D9/04
Inventor 姜国良赵福江宋迪范宁宁
Owner SHANDONG QIANQINGXIANGTAI BIOLOGICAL PROD CO LTD
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