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Method for extracting krill oil with high phosphatide content from Antarctic krills

A technology of Antarctic krill oil and Antarctic krill, applied in the direction of fat oil/fat production, fat production, etc., can solve the problems of high extraction process temperature, large difference between Antarctic krill and lobster components, and inability to extract Antarctic krill shrimp oil, etc. , to achieve high extraction efficiency and good phospholipid enrichment effect

Inactive Publication Date: 2012-05-23
SHANDONG NORMAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The temperature of this extraction process is high, and due to the large difference in the composition of Antarctic krill and lobster, it cannot be applied to the extraction of Antarctic krill oil, let alone the extraction of Antarctic krill oil with high phospholipid content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) drying: drying fresh Antarctic krill at 55-75°C to obtain dry Antarctic krill with a water content (mass percentage) of 8-10%;

[0014] (2) Extraction: Take n-hexane 6.5 times the weight of dried Antarctic krill and extract the dried Antarctic krill for 3 times at 25-30°C, and filter out the dried Antarctic krill for each extraction; after 3 extractions , the extraction rate of phospholipids was 92.0%;

[0015] (3) Solvent volatilization: combine the extracts for 3 times, evaporate the extracts at a temperature of 25~55°C and a vacuum of -0.06~-0.085Mpa, remove the n-hexane in the extracts, and obtain the phospholipid content (mass percentage ) is 32.0% Antarctic krill oil; then nitrogen or carbon dioxide gas is continuously passed through the Antarctic krill oil at normal temperature to remove residual n-hexane in the shrimp oil, so that the residual amount of n-hexane meets the national standard;

[0016] (4) Enrichment of phospholipids: adding the concentration ...

Embodiment 2

[0018] (1) drying: drying fresh Antarctic krill at 55-75°C to obtain dry Antarctic krill with a water content (mass percentage) of 8-10%;

[0019] (2) Extraction: Take No. 6 gasoline that is 6 times the weight of dried Antarctic krill and extract dried Antarctic krill for 4 times at 25-35°C. For each extraction, filter out the dried Antarctic krill; after 4 extractions After that, the extraction rate of phospholipids was 92.2%;

[0020] (3) Solvent volatilization: merging the extracts for 4 times, evaporating the extracts at a temperature of 25~55°C and a vacuum of -0.06~-0.085Mpa, removing No. 6 gasoline in the extracts to obtain the phospholipid content (mass percent content) is 31.5% of the Antarctic krill oil; then the Antarctic krill oil is continuously fed with nitrogen or carbon dioxide gas at room temperature to remove the residual No. 6 gasoline in the shrimp oil, so that the residual amount meets the national standard;

[0021] (4) Enrichment of phospholipids: addin...

Embodiment 3

[0023] (1) drying: drying fresh Antarctic krill at 55-75°C to obtain dry Antarctic krill with a water content (mass percentage) of 8-10%;

[0024] (2) Extraction: Take petroleum ether 7 times the weight of dried Antarctic krill and extract the dried Antarctic krill for 3 times at 25-35°C, and use filter paper to filter out the dried Antarctic krill for each extraction; after 3 extractions , the extraction rate of phospholipids is 91.5%;

[0025] (3) Solvent volatilization: Combine the extracts for 3 times, evaporate the extracts at a temperature of 25 to 55°C and a vacuum of -0.06 to -0.085Mpa, remove the petroleum ether in the extracts, and obtain a mass percentage of phospholipids of 31.5 % of the Antarctic krill oil; then the Antarctic krill oil is continuously fed with nitrogen or carbon dioxide gas at normal temperature to remove the residual petroleum ether in the shrimp oil, so that the residual petroleum ether meets the national standard;

[0026] (4) Enrichment of ph...

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Abstract

The invention discloses a method for extracting krill oil with high phosphatide content from Antarctic krills. The method comprises the following steps: (1) drying fresh Antarctic krills to obtain dry Antarctic krills; (2) performing extraction to dry Antarctic krills for 3 times with organic solvent; (3) mixing the extracting solutions, evaporating the mixed extracting solution to obtain Antarctic krill oil with the phosphatide content of 30-35%; then introducing nitrogen or carbon dioxide to remove the residual organic solvent; and adding polar organic solvent in the Antarctic krill oil, mixing evenly, standing to ensure that the mixed solution performs natural layering; and evaporating the lower solution to obtain the Antarctic krill oil with high phosphatide content, and then introducing nitrogen or carbon dioxide to remove the residual polar organic solvent so as to obtain a product. The extraction technology is performed at a low temperature, thus the red color of krill oil can be maintained and the beneficial ingredients in the product can not be damaged. The invention has high extraction efficiency and good phosphatide accumulation effect. Therefore, the Antarctic krill oil with high phosphatide content can be obtained and other byproducts can also be obtained.

Description

technical field [0001] The invention relates to deep processing of Antarctic krill, in particular to a method for extracting shrimp oil with high phospholipid content from Antarctic krill. Background technique [0002] Antarctic krill live in the pollution-free Antarctic waters below 0°C for a long time and feed on phytoplankton (algae). Studies have found that Antarctic krill is currently one of the organisms with the highest protein content in the world, with a protein content of 17.56% in wet weight and more than 70% in dry weight. It is called "animal protein library for human beings in the future"; its body is rich in shrimp oil , astaxanthin, low-temperature enzymes and other active substances can be widely used in medicine, chemical industry, agriculture, aquatic products and other fields, and the value of comprehensive in-depth development is huge. The content of shrimp oil in the living body is 2.11%, but due to the current fishing of Antarctic krill The amount is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B1/10C11B1/02C11B1/00
Inventor 刘代成王欣张潇予
Owner SHANDONG NORMAL UNIV
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