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Method for extracting euphausia superba oil based on low-temperature continuous phase change technology

A technology of low-temperature continuous phase change and Antarctic krill oil, which is applied in the direction of fat oil/fat production, fat oil/fat refining, fat production, etc. It can solve the problems of large reagent volume, weakened water holding capacity, solvent residue, etc., and achieve protection quality, The effect of improving the extraction rate and avoiding the generation of harmful components

Pending Publication Date: 2021-12-07
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Industrial shrimp oil extraction uses whole shrimp as raw material and is leached with organic solvents, which requires a large amount of reagents and solvent residues, which poses food safety hazards and is not friendly to the environment.
Supercritical carbon dioxide extraction requires less solvent, and the extraction efficiency is relatively high, but there are also limitations. Most of the Antarctic krill oil extracted by this method is triglyceride, which hardly contains phospholipids; Inactivation treatment, high temperature conditions will affect the lipase and also denature the heat-labile Antarctic krill muscle protein. Due to the structural change, the renaturation of the denatured protein will become particularly difficult, even if the krill protein can be renatified. properties, various functions of the protein (such as gel forming function, extractability, water holding capacity, etc.) will also be greatly weakened; in addition, supercritical carbon dioxide extraction requires high equipment, complicated process, and high extraction cost, which is not conducive to Realize large-scale industrialized continuous production
Enzymatic hydrolysis is considered to be a green and high-quality oil extraction technology with great potential, but there is a lack of targeted enzyme preparations, and the high cost of commercial enzyme preparations and high degree of protein hydrolysis limit the industrialization of enzymatic hydrolysis to extract residual oil develop

Method used

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  • Method for extracting euphausia superba oil based on low-temperature continuous phase change technology
  • Method for extracting euphausia superba oil based on low-temperature continuous phase change technology

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A method for extracting Antarctic krill oil based on low-temperature continuous phase change technology, comprising the following steps:

[0026] S1 Antarctic krill meal raw materials are dried using a blast dryer to control the temperature at about 30°C, and the moisture content is controlled to be ≤10%.

[0027] S2 Weigh 1.0 kg of Antarctic krill powder processed in step S1, put it into the extraction kettle of the continuous phase change extraction device, add 3 L of absolute ethanol and soak for 3 hours.

[0028] S3 Compress the extraction kettle described in step S2 at an extraction temperature of 40°C and an extraction pressure of 0.45Mpa, compress n-butane into a liquid, flow through the extraction kettle at a flow rate of 60L / h, and continuously extract for 10min to extract krill After the oil enters the analysis kettle, the analysis temperature is 60°C, and the analysis pressure is 0.25Mpa; through heating and decompression, the n-butane phase changes into a ga...

Embodiment 2

[0031] A method for extracting Antarctic krill oil based on low-temperature continuous phase change technology, comprising the following steps:

[0032] S1 Antarctic krill meal raw materials are dried using a blast dryer to control the temperature at about 30°C, and the moisture content is controlled to be ≤10%.

[0033] S2 Weigh 1.0 kg of Antarctic krill powder processed in step S1, put it into the extraction kettle of the continuous phase change extraction device, add 3 L of absolute ethanol and soak for 3 hours.

[0034] S3 Compress the n-butane into a liquid in the extraction kettle described in step S2 at an extraction temperature of 40°C and an extraction pressure of 0.55Mpa, and flow through the extraction kettle at a flow rate of 60L / h for continuous extraction for 15min to extract krill After the oil enters the analysis kettle, the analysis temperature is 60°C, and the analysis pressure is 0.25Mpa; through heating and decompression, the n-butane phase changes into a g...

Embodiment 3

[0037] A method for extracting Antarctic krill oil based on low-temperature continuous phase change technology, comprising the following steps:

[0038] S1 Antarctic krill meal raw materials are dried using a blast dryer to control the temperature at about 30°C, and the moisture content is controlled to be ≤10%.

[0039] S2 Weigh 1.0 kg of Antarctic krill powder processed in step S1, put it into the extraction kettle of the continuous phase change extraction device, add 3 L of absolute ethanol and soak for 3 hours.

[0040] S3 Compress the extraction kettle described in step S2 under the conditions of extraction temperature 40°C and extraction pressure 0.65Mpa, compress n-butane into a liquid, flow through the extraction kettle at a flow rate of 60L / h, and extract krill continuously for 20min. After the oil enters the analysis kettle, the analysis temperature is 60°C, and the analysis pressure is 0.25Mpa; through heating and decompression, the n-butane phase changes into a gas...

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Abstract

The invention belongs to the technical field of extraction and separation of bioactive substances, and particularly relates to a method for extracting euphausia superba oil based on a low-temperature continuous phase change technology. The method comprises the following steps: by taking euphausia superba powder as a raw material, pretreating the euphausia superba powder, putting the pretreated euphausia superba powder into an extraction kettle, adding ethanol, conducting soaking for a period of time, and conducting extracting under the process conditions that the temperature is 25-65 DEG C, the pressure is 0.2-1.0 Mpa, the desorption temperature is 40-80 DEG C and the desorption pressure is 0.1-0.8 Mpa. According to the method, low-temperature continuous phase-change extraction equipment is applied, the euphausia superba powder is soaked in ethanol in an extraction kettle and then subjected to low-temperature continuous phase-change continuous extraction, and on the basis of ensuring that 90% or more of grease is extracted, water-soluble and fat-soluble component substances are reserved to the greatest extent. The extraction process disclosed by the invention has the advantages of safety, high efficiency, no solvent residue, no damage to product components and avoidance of generation of harmful components, and the obtained krill oil nutrients are good in quality and can realize industrial development.

Description

technical field [0001] The invention relates to the technical field of extraction and separation of biologically active substances, in particular to a method for extracting Antarctic krill oil based on low-temperature continuous phase change technology. Background technique [0002] Antarctic krill contains krill oil, which is rich in lipid components of various functional ingredients such as phospholipids, EPA, DHA, and astaxanthin. Studies have found that Antarctic krill oil has important biological functions, has good absorbability in the human body, and can effectively reduce the levels of total cholesterol, triglycerides and low-density lipoprotein cholesterol in serum, thereby reducing blood lipids and preventing Cardiovascular and cerebrovascular diseases and the prevention of atherosclerosis and other diseases. [0003] The extraction methods of krill oil in the prior art mainly include organic solvent extraction, supercritical fluid extraction, enzymatic hydrolysis...

Claims

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Application Information

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IPC IPC(8): C11B1/02C11B1/10C11B3/00
CPCC11B1/02C11B1/10C11B3/00
Inventor 赵力超刘悦曹庸马颖川
Owner SOUTH CHINA AGRI UNIV
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