Method of extracting polyunsaturated fatty acid grease by CO2 supercritical extraction

A supercritical extraction method, unsaturated fatty acid technology, applied in the direction of edible oil/fat, application, food preparation, etc., can solve the problems of oil oxidation, solvent residue, etc., and achieve the effect of reducing cost, preventing oxidation and high purity

Pending Publication Date: 2009-11-18
罗盖特生物营养品(武汉)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, arachidonic acid (ARA) oils and docosahexaenoic acid (DHA) oils mostly use solvent extraction, which has a high oil yield, but there are solvent residues, and the oil is exposed to air and heat during extraction, and the oil inevitable oxidation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment one: one of extraction method of arachidonic acid (ARA) oil

[0023] One with CO 2 The method for extracting polyunsaturated fatty acid oil by supercritical extraction method, the steps are as follows: the dried bacteria of arachidonic acid (ARA) are crushed and sieved, and the fineness of the bacteria is 20 meshes, and then put into a barrel after crushing, and the raw materials are separated from the filter About 2-3 cm, put the barrel into the extraction kettle, cover the pressure ring and the upper plug, and open the CO 2 The supercritical extractor starts to heat up, and the extraction temperature is 30°C; after the temperature of the refrigerator drops to about 0°C, and the temperature of the extraction, separation, and rectification columns is close to the set requirements, the CO 2 The gas is first liquefied, the liquid CO 2 Enter the extraction kettle through the pump I, mixer, and purifier; after the pressure is balanced, let go of the residual ai...

Embodiment 2

[0024] Embodiment two: extracting arachidonic acid (ARA) grease method two

[0025] One with CO 2 The method for extracting polyunsaturated fatty acid oil by supercritical extraction method, the steps are as follows: the dried bacteria of arachidonic acid (ARA) are pulverized and sieved, and the fineness of the bacteria is 40 mesh, and the pulverized material is loaded into a barrel, and the raw material is separated from the filter screen About 2-3 cm, put the barrel into the extraction kettle, cover the pressure ring and the upper plug, and open the CO 2 The supercritical extractor starts to heat up, and the extraction temperature is 50°C; after the temperature of the refrigerator drops to about 0°C, and the temperature of the extraction, separation, and rectification columns is close to the set requirements, the CO 2 The gas is first liquefied, the liquid CO 2 Enter the extraction kettle through the pump I, mixer, and purifier; after the pressure is balanced, let go of th...

Embodiment 3

[0026] Embodiment three: the third method of extracting arachidonic acid (ARA) oil

[0027] One with CO 2 The method for extracting polyunsaturated fatty acid oil by supercritical extraction method, the steps are as follows: the dried bacteria of arachidonic acid (ARA) are crushed and sieved, and the fineness of the bacteria is 60 mesh, and the powder is loaded into a barrel after crushing, and the raw material is separated from the filter screen About 2-3 cm, put the barrel into the extraction kettle, cover the pressure ring and the upper plug, and open the CO 2 The supercritical extraction machine starts to heat up, and the extraction temperature is 70°C; after the temperature of the refrigerator drops to about 0°C, and the temperature of the extraction, separation, and rectification columns is close to the set requirements, the CO 2 The gas is first liquefied, the liquid CO 2 Enter the extraction kettle through the pump I, mixer, and purifier; after the pressure is balanc...

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PUM

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Abstract

The invention provides a method of extracting polyunsaturated fatty acid grease by CO2 supercritical extraction, which comprise the following steps: (1) grinding and sieving; (2) heating and extracting; (3) injecting CO2 in liquid state into an extraction kettle, pressurizing; (4) collecting grease after extraction. The method has the advantages of that extraction is carried out on the condition of that the temperature is 35-40 DEG C near to room temperature and CO2 gas is used for enveloping, thus effectively preventing ARA and DHA grease from oxidation; organic solvent is not used in the whole process so that extractant has no solvent residue, thus preventing toxic hazard to human body and pollution to environment in the extraction process, and being 100% pure natural; extraction and separation are combined together, so when CO2-SCF being full of solute flows through a separator, due to pressure lowering, CO2 and extractant can be two phases rapid and separated with each other, thus having high extraction efficiency, less energy consumption and good safety, saving and lowering cost. By adopting the method, crude oil is in higher quality, acid value is lower, and the loss of refining is less.

Description

technical field [0001] The invention relates to the technical field of fatty acid oil extraction, in particular to a 2 A method for extracting polyunsaturated fatty acid oil by supercritical extraction. Background technique [0002] Due to the increasing awareness of polyunsaturated fatty acids (PUFAs), arachidonic acid (ARA) and docosahexaenoic acid (DHA) oils are increasingly used in infant formula and formula foods , the product quality of arachidonic acid (ARA) oil and docosahexaenoic acid (DHA) oil has received increasing attention. At present, arachidonic acid (ARA) oils and docosahexaenoic acid (DHA) oils mostly use solvent extraction, which has a high oil yield, but there are solvent residues, and the oil is exposed to air and heat during extraction, and the oil Oxidation is inevitable. Contents of the invention [0003] The purpose of the present invention is to provide a CO 2 The method for extracting polyunsaturated fatty acid oil by supercritical extraction...

Claims

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Application Information

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IPC IPC(8): A23D9/02A23L1/29A23L33/00
Inventor 袁谦
Owner 罗盖特生物营养品(武汉)有限公司
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