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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 problem of high extraction process temperature, large difference between Antarctic krill and lobster components, and the inability to apply Antarctic krill shrimp oil extraction, etc. problem, to achieve the effect of high extraction efficiency and good phospholipid enrichment effect

Inactive Publication Date: 2011-05-04
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 the 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 6.5 times the weight of dry Antarctic krill and extract dry Antarctic krill 3 times at 25-30°C. After each extraction, filter the dried Antarctic krill; , the extraction rate of phospholipids was 92.0%;

[0015] (3) solvent volatilization: merge 3 extraction solutions, extract solution at temperature 25~55 ℃, evaporate under vacuum tightness-0.06~-0.085Mpa, remove the normal hexane in extraction solution, obtain 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 the residual n-hexane in the shrimp oil, so that the residual amount of n-hexane meets the national standard;

[0016] (4) Enrichment of phospholipids: Add 80% ethanol with the same volume concentration (mas...

Embodiment 2

[0018] (1) Drying: drying the 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 with 6 times the weight of dry Antarctic krill and extract dry Antarctic krill 4 times at 25-35°C. After each extraction, filter out the dry Antarctic krill; after 4 extractions The extraction rate of phospholipids was 92.2%;

[0020] (3) solvent volatilization: merging 4 times of extracts, the extract is evaporated at temperature 25~55 ℃, under vacuum tightness-0.06~-0.085Mpa, removes No. 6 gasoline in the extract, obtains phospholipid content (mass percent content) is 31.5% Antarctic krill oil; then nitrogen or carbon dioxide gas is continuously passed through the Antarctic krill oil 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: Add 90% (mass percent concentrat...

Embodiment 3

[0023] (1) Drying: drying the 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 dry Antarctic krill and extract dry Antarctic krill three times at 25-35°C. After each extraction, filter the dry Antarctic krill with filter paper; after three extractions , the extraction rate of phospholipids was 91.5%;

[0025] (3) solvent volatilization: merge the extracts for 3 times, evaporate the extract at a temperature of 25~55 ℃, and under the vacuum degree of -0.06~-0.085Mpa, remove the petroleum ether in the extract, and obtain a phospholipid mass percentage of 31.5 % Antarctic krill oil; then continuously pass nitrogen or carbon dioxide gas to the Antarctic krill oil at room 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 phospholipids: Add ...

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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 pollution-free Antarctic waters below 0°C for a long time and feed on phytoplankton (algae). The study found that Antarctic krill is 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. Active substances such as astaxanthin, astaxanthin, and low-temperature enzymes can be widely used in medicine, chemical industry, agriculture, aquatic products and other fields, and the comprehensive in-depth development value 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 still small, so there are no reports of krill oil extraction from Antarctic krill. [0003] Phospholipids a...

Claims

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Application Information

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IPC IPC(8): C11B1/10C11B1/02C11B1/00
Inventor 刘代成王欣张潇予
Owner SHANDONG NORMAL UNIV
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