Method for rapidly enriching astaxanthin and ester thereof from Euphausia superba
A technology of Antarctic krill and astaxanthin, applied in the direction of organic chemistry, can solve problems such as complex process, achieve good effect and fast adsorption effect
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Embodiment 1
[0021] Add 100g of dried Antarctic krill, add 600ml of n-hexane, stir and extract for 3 hours, pour out and use an 80-mesh filter to filter the extract, repeat the extraction for 2 times in the same way, a total of 3 times, combine the coarse filtrate and fine filter to obtain the filtrate .
[0022] Take 1000ml filtrate, add 20gV to it E 50% white V E Powder, stir for 5 seconds, white V is visible E The powder turns red quickly, while the solution is white due to V E The rapid adsorption of the powder changed from red to light yellow. After the liquid has stood still, pour the liquid out to get a red V E pink. to the red V E Add 3 to 5 times acetone (V) to the powder (V), stir and elute for 5 to 10 minutes, filter, repeat the same elution method twice, combine the eluents to obtain a red acetone liquid, evaporate the acetone to obtain a red paste matter (filtered white V E Powder content less than 50% V E powder, dried to 17.5g). Dissolve the paste in petroleum ethe...
Embodiment 2
[0024] The n-hexane extraction method is the same as in Example 1, and 2g of white V is added to the 1000ml filtrate. E Stir the powder, the red color in the liquid is quickly replaced by V E The powder absorbs and turns red, and the liquid is poured out to get a red V E Powder, after elution with acetone, elution by column chromatography and detection by thin-layer analysis, it is known that astaxanthin is mainly adsorbed, astaxanthin accounts for 90% and astaxanthin ester accounts for about 10%, and astaxanthin is obtained in total and astaxanthin ester 0.55g.
Embodiment 3
[0026] White V E The solvent used in the preparation of the Antarctic krill extract before the powder adsorption was 6# gasoline, and the others were the same as in Example 1 to obtain 0.53 g of astaxanthin and astaxanthin ester.
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