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Rapid low temperature extraction method for total astaxanthin from frozen Euphausia superba Dana

An Antarctic krill and extraction method technology, which is applied in the field of preparation of Antarctic krill astaxanthin, can solve the problems of no literature reports, and achieve the effects of short operation time, reduced risk of oxidative deterioration, and low extraction temperature

Inactive Publication Date: 2012-02-01
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no literature report on the low-temperature extraction method of total astaxanthin from Antarctic krill

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take 2.0kg of Antarctic krill frozen at -18°C each time, choose an ester-ether mixed solvent with a volume ratio of ethyl acetate and ethylene glycol monomethyl ether of 2:1, directly add 4L to form a low-temperature mixture, and then pulverize and homogenize for 6 minutes; 4 Centrifuge at low temperature for 6 minutes at 6500 rpm; after centrifugation, pour and collect the upper layer of ester-ether mixed solution; add 4L of ester-ether mixed solvent to the lower layer of water and minced meat to repeat the homogenization and centrifugation process once; combine the upper layer of ester-ether mixture twice The solution was concentrated under reduced pressure to recover the solvent, and dried to obtain a dark red viscous oil, namely the total astaxanthin extract from Antarctic krill. The extraction is repeated several times, the product is between 50.8-63.2 grams, and the extraction rate is 2.54-3.16%.

[0023] The total astaxanthin extract from Antarctic krill and the ...

Embodiment 2

[0025] Take 2.0kg of Antarctic krill frozen at -18°C, select an ester-ether mixed solvent with a volume ratio of ethyl acetate and ethylene glycol monomethyl ether of 2:1, add 2.4L of the ester-ether mixed solvent, and extract according to the process of Example 1 Antarctic krill total astaxanthin extract, 51.6g of the product was obtained, and the extraction rate was 2.58%. According to the analysis by the ultraviolet-visible spectrophotometer method, the content of the total astaxanthin in the Antarctic krill total astaxanthin extract extracted by the method is 0.346% based on the standard product astaxanthin.

Embodiment 3

[0027] Take 2.0kg of Antarctic krill frozen at -18°C, select an ester-ether mixed solvent with a volume ratio of ethyl acetate and ethylene glycol monomethyl ether of 1:1, add 4.0L of the ester-ether mixed solvent, and extract according to the process of Example 1 Antarctic krill total astaxanthin extract, product 58.7g, its extraction rate is 2.94%. According to the analysis by ultraviolet-visible spectrophotometer, the content of total astaxanthin in the Antarctic krill total astaxanthin extract extracted by this method is 0.386% based on the standard product astaxanthin.

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Abstract

The invention relates to a rapid low temperature extraction method for total astaxanthin from frozen Euphausia superba Dana. The method comprises the following steps: (1) directly adding a frozen raw material of Euphausia superba Dana into a mixed solvent of ethyl acetate and ethylene glycol monomethyl ether, crushing the frozen raw material, homogenizing obtained mixture, and carrying out centrifugation, wherein, the upper layer of an obtained solution is clear liquid of a mixed solution of ester and ether, and the lower layer of the obtained solution is a mixture of water and minced shrimp;(2) taking the clear liquid of the mixed solution of ester and ether for pressure reduced recovery of the solvent, and carrying out drying so as to obtain crimson thick grease, that is, the extract of total astaxanthin of Euphausia superba Dana; (3) dissolving the extract of total astaxanthin of Euphausia superba Dana in anhydrous alcohol to produce a solution with a concentration of 300 to 500 mg / mL, and carrying out separation and collection. The method provided in the invention has the advantages of a simple process, low temperature and a short operation time, which enables the danger of oxidation deterioration in the process of extraction to be effectively reduced; the content of total astaxanthin in the obtained product is more than or equal to 0.5%.

Description

technical field [0001] The invention belongs to the field of preparation of Antarctic krill astaxanthin, in particular to a rapid low-temperature extraction method of frozen Antarctic krill astaxanthin. Background technique [0002] Antarctic krill, also known as Antarctic krill, Latin name Euphausia superba Dana, crustaceans, is the largest marine plankton in the waters near Antarctica, with a biomass of 650-1000 million tons. Antarctic krill is rich in protein, lipids and other active components, especially the lipid components are rich in omega-3 polyunsaturated fatty acids and astaxanthin components, which have high nutritional value and antioxidant effect. Among them, astaxanthin components are mainly astaxanthin (Astaxanthin, also known as astaxanthin, that is, 3,3'-dihydroxy-4,4'-diketone-β-carotene, >80%), also includes some Astaxanthin mono-fatty acid esters, astaxanthin di-fatty acid esters, etc. have a high ability to resist oxidation and eliminate free radica...

Claims

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Application Information

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IPC IPC(8): A23L1/30
Inventor 樊成奇杨桥田晓清陆亚男黄洪亮陈雪忠
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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