Method for simultaneously extracting high-phospholipid krill oil and high-astaxanthin krill oil

An astaxanthin ester krill and krill oil technology, which is applied in the fields of edible oil/fat, food science, and application, can solve the problems of complex extraction process, low effective components of krill oil, and large amount of organic solvent used, Achieve the effects of high purity, improved dissolution rate and dissolution efficiency, and simple extraction process

Inactive Publication Date: 2017-05-31
徐霞 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] At present, the extraction of Antarctic krill oil has been publicly reported in related documents, such as the extraction method of Antarctic krill oil disclosed in Canadian patent document EP01417211B1. NEPTUNE company extracts shrimp oil from ice fresh shrimp. It adopts dehydration with acetone and then Extract Antarctic krill oil, and then use ethyl acetate to extract the remaining Antarctic krill oil; Norway Aker company proposed a supercritical extraction method for Antarctic krill oil; another example, Chinese patent document 201110022395.1 discloses the extraction of high phospholipid content from Antarctic k

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  • Method for simultaneously extracting high-phospholipid krill oil and high-astaxanthin krill oil

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Embodiment 1

[0027] A method for simultaneously extracting high phospholipid krill oil and high astaxanthin krill oil, comprising steps as follows:

[0028] (1) Extraction: Add a mixed solvent 8 times the weight of the Antarctic krill powder to the Antarctic krill powder and mix evenly. The mixed solvent is a mixture of n-hexane and ethanol. The volume ratio of n-hexane and ethanol is: 2:1, and then Countercurrent ultrasonic extraction at 12°C for 1.5 hours, the ultrasonic intensity is 10W / cm 2 , the ultrasonic frequency is 40kHz.

[0029] The extracted mixture is filtered through a series combination of a primary filter, a secondary filter and a tertiary filter; the primary filter and the secondary filter are conventional cartridge filters, and the primary filter The pore diameters of the filter element of the filter and the secondary filter are 4.5 μm and 0.25 μm respectively; the tertiary filter is a hollow fiber filter, and the molecular weight cut-off of the hollow fiber is 10,000 Da...

Embodiment 2

[0034] A method for simultaneously extracting high phospholipid krill oil and high astaxanthin krill oil, comprising steps as follows:

[0035] (1) Extraction: Add a mixed solvent 6 times the weight of the Antarctic krill powder to the Antarctic krill powder and mix evenly. The mixed solvent is a mixture of n-hexane and ethanol. The volume ratio of n-hexane and ethanol is: 3:2, and then Countercurrent ultrasonic extraction at 15°C for 1 hour, the ultrasonic intensity is 20W / cm 2 , the ultrasonic frequency is 60kHz.

[0036] The extracted mixture is filtered through a series combination of a primary filter, a secondary filter and a tertiary filter; the primary filter and the secondary filter are conventional cartridge filters, and the primary filter The pore diameters of the filter element of the filter and the secondary filter are 4.5 μm and 0.25 μm respectively; the tertiary filter is a hollow fiber filter, and the molecular weight cut-off of the hollow fiber is 20,000 Dalto...

Embodiment 3

[0041] A method for simultaneously extracting high phospholipid krill oil and high astaxanthin krill oil, comprising steps as follows:

[0042] (1) Extraction: Add a mixed solvent 7 times the weight of the Antarctic krill powder to the Antarctic krill powder and mix evenly. The mixed solvent is a mixture of n-hexane and ethanol. The volume ratio of n-hexane and ethanol is: 1:1, and then Countercurrent ultrasonic extraction at 12°C for 4 hours, the ultrasonic intensity is 5W / cm 2 , the ultrasonic frequency is 30kHz.

[0043] The extracted mixture is filtered through a series combination of a primary filter, a secondary filter and a tertiary filter; the primary filter and the secondary filter are conventional cartridge filters, and the primary filter The pore diameters of the filter element of the filter and the secondary filter are 4.5 μm and 0.25 μm respectively; the tertiary filter is a hollow fiber filter, and the molecular weight cut-off of the hollow fiber is 10,000 Dalto...

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Abstract

The invention relates to a method for simultaneously extracting high-phospholipid-content krill oil and high-astaxanthin-content krill oil. The method comprises the following steps: carrying out countercurrent ultrasonic extraction on Antarctic krill meal by adopting a mixed solvent; finally, carrying out three-grade filtering and filtering krill residues to obtain filtrate, namely an extracting solution; decompressing and evaporating the extracting solution; removing an organic solvent in the extracting solution to obtain crude oil; adding an ethanol solution with the volume which is equal to that of the crude oil and has the mass concentration of 45 percent to 75 percent into the crude oil; standing and layering for 2h to 4h; collecting supernatant and subnatant respectively; decompressing and evaporating respectively to obtain the high-phospholipid-content krill oil and the high-astaxanthin-content krill oil respectively. According to the method provided by the invention, the krill oil is extracted by adopting a mixed solvent of n-hexane and ethanol, so that the dissolution rate and dissolution efficiency of the krill oil are greatly improved; the three-grade filtering and precipitation of the 45 percent to 75 percent ethanol solution are combined and the obtained krill oil has high purity; two products including the high-phospholipid-content krill oil and the high-astaxanthin-content krill oil can be obtained in one step; an extraction process is simple and the production cost is low.

Description

technical field [0001] The invention relates to a method for extracting Antarctic krill oil from Antarctic krill powder, in particular to a method for simultaneously extracting high phospholipid krill oil and high astaxanthin ester krill oil, and belongs to the technical field of functional food processing. Background technique [0002] Antarctic krill (Euphausia superba Dana), which lives in the non-polluted Antarctic waters below 0°C for a long time, feeds on phytoplankton (algae), is a marine crustacean. Antarctic krill is the center of the food chain of marine life in the Southern Ocean, and is the key to maintaining the ecological balance of the Southern Ocean. Antarctic krill is a high-protein food, and its body is rich in various nutritional metal elements, such as calcium, phosphorus, potassium, and sodium needed by the human body. At the same time, Antarctic krill is rich in antioxidant nutrients, such as vitamins A, E, astaxanthin and flavonoids. [0003] Astaxan...

Claims

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Application Information

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IPC IPC(8): A23D9/02
CPCA23D9/02
Inventor 徐霞
Owner 徐霞
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