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 problems such as no literature report, and achieve the effects of short operation time, simple preparation process and low extraction temperature
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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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