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Method for extracting astaxanthin through ionic liquid microemulsion

A technology of ionic liquid and microemulsion, which is applied in organic chemistry and other fields, can solve the problems of potential toxicity of food safety products and serious risks in sustainability, and achieve the effects of protecting biological activity, strong solubility, and short extraction time

Active Publication Date: 2019-07-12
GUANGDONG OCEAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Astaxanthin is a carotenoid with the highest value. At present, more than 90% of astaxanthin in the market is obtained through chemical synthesis, and it has been pointed out that there are serious risks in food safety, product potential toxicity and sustainability

Method used

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  • Method for extracting astaxanthin through ionic liquid microemulsion
  • Method for extracting astaxanthin through ionic liquid microemulsion
  • Method for extracting astaxanthin through ionic liquid microemulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Fresh shrimp shells were washed and freeze-dried at -60°C for 24 hours, then placed in a grinder to grind them into powder, and passed through a 40-mesh sieve to obtain shrimp shell powder for later use.

[0052] (2) ionic liquid, emulsifier and distilled water are mixed uniformly to prepare ionic liquid microemulsion, so that the massfraction of ionic liquid in the obtained ionic liquid microemulsion is 12%, the massfraction of emulsifier is 30%, and all the other are distilled water; Wherein , the ionic liquid is tetrabutylphosphine trifluoroacetate, and the emulsifier is uniformly prepared by mixing polyethylene glycol octylphenyl ether and n-butanol at a mass ratio of 3:1.

[0053] (3) Get the shrimp shell powder that 1g step (1) obtains and the ionic liquid microemulsion that 40g step (2) obtains and place in centrifuge tube, stir and mix, then place this centrifuge tube in ultrasonic cleaner, set ultrasonic The power is 50W, ultrasonic at room temperature is u...

Embodiment 2

[0057] (1) Fresh shrimp shells were washed and freeze-dried at -55°C for 36 hours, then placed in a grinder to grind them into powder, and passed through an 80-mesh sieve to obtain shrimp shell powder for later use.

[0058] (2) ionic liquid, emulsifier and distilled water are mixed uniformly to prepare ionic liquid microemulsion, make the massfraction of ionic liquid in the obtained ionic liquid microemulsion be 15%, the massfraction of emulsifier is 50%, all the other are distilled water; Wherein , the ionic liquid is tetrabutylphosphine tetrafluoroborate, and the emulsifier is uniformly prepared by mixing Tween 80 and n-amyl alcohol at a mass ratio of 5:1.

[0059] (3) Get the shrimp shell powder that 1g step (1) obtains and the ionic liquid microemulsion that 60g step (2) obtains and place in the centrifuge tube, stir and mix, then this centrifuge tube is placed in the ultrasonic cleaner, set ultrasonic The power is 70W, the room temperature is ultrasonic for 40min, and un...

Embodiment 3

[0063] (1) Fresh shrimp shells were washed and freeze-dried at -50°C for 48 hours, then placed in a grinder to grind them into powder, and passed through a 120-mesh sieve to obtain shrimp shell powder for later use.

[0064] (2) ionic liquid, emulsifier and distilled water are mixed uniformly to prepare ionic liquid microemulsion, make the massfraction of ionic liquid in the obtained ionic liquid microemulsion be 20%, the massfraction of emulsifier is 40%, all the other are distilled water; Wherein , the ionic liquid is tetrabutylphosphine tetrafluoroborate, and the emulsifier is uniformly prepared by mixing sorbitan monolaurate and ethanol at a mass ratio of 7:1.

[0065] (3) Get the shrimp shell powder that 1g step (1) obtains and the ionic liquid microemulsion that 80g step (2) obtains and place in centrifuge tube, stir and mix, then place this centrifuge tube in ultrasonic cleaner, set ultrasonic The power is 100W, ultrasonic at room temperature is used for 30 minutes, and...

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Abstract

The invention discloses a method for extracting astaxanthin through an ionic liquid microemulsion. The method comprises the steps that ionic liquid, an emulsifier and water are mixed for preparing theionic liquid microemulsion, so that the mass fraction of the ionic liquid in the obtained ionic liquid microemulsion is 12-20%, and the mass fraction of the emulsifier in the obtained ionic liquid microemulsion is 30-60%; after shrimp shell powder and the ionic liquid microemulsion are mixed, extraction is conducted; the mixture obtained after extraction is subjected to solid-liquid separation, asolution is collected, and an astaxanthin extraction solution is obtained; water is added to the astaxanthin extraction solution, the astaxanthin is subjected to standing and reverse precipitation, then solid-liquid separation is conducted, and an astaxanthin precipitate is collected and dried. The method for extracting the astaxanthin is easy to implement, mild in condition and short in extraction time, and the extraction amount of the astaxanthin extracted from shrimp shells is high.

Description

technical field [0001] The invention relates to the technical field of chemical extraction, in particular to a method for extracting astaxanthin by using ionic liquid microemulsion. Background technique [0002] Astaxanthin is a carotenoid with the highest value. At present, more than 90% of astaxanthin in the market is obtained through chemical synthesis, and it has been pointed out that there are serious risks in food safety, product potential toxicity and sustainability. Astaxanthin is widely found in various biological resources, such as algae, yeast, crustacean shells and flamingo feathers. Therefore, the research on extracting astaxanthin from natural biological resources has attracted increasing attention. During shrimp processing, shrimp heads, shrimp shells, and shrimp tails account for 40-60% of the total mass of the whole shrimp. The recovery of natural astaxanthin from shrimp processing waste can not only alleviate the environmental pollution caused by direct d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C403/24
CPCC07C403/24C07C2601/16
Inventor 高静周晓纯
Owner GUANGDONG OCEAN UNIVERSITY
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