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Method of producing high-purity ethyl linolenate

A high-purity technology of ethyl linoleate, applied in the preparation of carboxylate, production of bulk chemicals, chemical instruments and methods, etc., can solve the problem that the separation effect of ethyl linoleate and ethyl linoleate is not good, and the operation is not easy. Control, complex process and other problems, to achieve the effect of easy control, short process and simple process

Inactive Publication Date: 2005-09-21
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The urea inclusion method has the advantages of separating saturated and unsaturated fatty acid ethyl esters, but the separation effect of ethyl linolenate and ethyl l

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Using perilla oil as raw material, carry out transesterification reaction with ethanol under the condition of lipase catalysis to obtain mixed fatty acid ethyl ester, carry out supercritical carbon dioxide extraction to mixed fatty acid ethyl ester, extraction pressure is 12Mpa, and temperature is 45 ℃;

[0020] (2) The supercritical carbon dioxide dissolved with various fatty acid ethyl ester components that the extractor flows out enters the silver nitrate adsorption column, and the adsorption column pressure is 10Mpa, and the temperature is 50°C;

[0021] (3) Desorb the silver nitrate adsorption column by supercritical carbon dioxide containing 3% ethanol to obtain an ethanol solution rich in ethyl linolenate, the desorption operating pressure: 20Mpa, temperature 50°C;

[0022] (4) Distilling the ethanol solution rich in ethyl linolenic acid to remove ethanol to obtain high-purity ethyl linolenic acid with an ethyl linolenic acid content of 88%.

Embodiment 2

[0024] (1) Using linseed oil as raw material, carry out transesterification reaction with ethanol under the condition of lipase catalysis to obtain mixed fatty acid ethyl ester, carry out supercritical carbon dioxide extraction to mixed fatty acid ethyl ester, extraction pressure is 10Mpa, and temperature is 50 ℃;

[0025] (2) The supercritical carbon dioxide dissolved with various fatty acid ethyl ester components that the extractor flows out enters the silver nitrate adsorption column, and the adsorption column pressure is 10Mpa, and the temperature is 50°C;

[0026] (3) Desorb the silver nitrate adsorption column by supercritical carbon dioxide containing 5 wt% ethanol to obtain an ethanol solution rich in ethyl linolenate, the desorption operating pressure: 30Mpa, temperature 40°C;

[0027] (4) Distilling the ethanol solution rich in ethyl linolenic acid to remove ethanol to obtain high-purity ethyl linolenic acid with an ethyl linolenic acid content of 92%.

Embodiment 3

[0029] (1) Using evening primrose oil as raw material, carry out transesterification reaction with ethanol under the condition of lipase catalysis to obtain mixed fatty acid ethyl ester, carry out supercritical carbon dioxide extraction to mixed fatty acid ethyl ester, extraction pressure is 18Mpa, temperature is 50 ℃ ;

[0030] (2) The supercritical carbon dioxide dissolved with various fatty acid ethyl ester components that the extractor flows out enters the silver nitrate adsorption column, the adsorption column pressure is 16Mpa, and the temperature is 55°C;

[0031] (3) Desorb the silver nitrate adsorption column by supercritical carbon dioxide containing 8% ethyl acetate to obtain an ethyl acetate solution rich in ethyl linolenate, the desorption operating pressure: 25Mpa, temperature 45°C;

[0032] (4) Distilling the ethyl acetate solution rich in ethyl linolenic acid to remove the ethyl acetate to obtain high-purity ethyl linolenic acid with an ethyl linolenic acid con...

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Abstract

A process for preparing high-purity ethyl linolenate from the mixed ethyl ester of fatty acid containing ethyl linolenate includes such steps as supercritical CO2 extracting, adsorbing by silver nitrate column, desorbing by supercritical CO2 containing carrier to obtain solution rich in ethyl linolenate, and distilling to removing carrier.

Description

technical field [0001] The invention belongs to a method for producing ethyl linolenic acid, in particular to a method for producing ethyl linolenic acid with high purity through supercritical carbon dioxide extraction and silver ion complex adsorption using mixed fatty acid ethyl ester containing ethyl linolenic acid as raw material ester method. Background technique [0002] α-linolenic acid has the physiological function of maintaining the normal operation of the brain and nervous system, but it cannot be biosynthesized in the human body. It is a fatty acid that must be supplemented by external food. , Precursors of EPA and DHA substances that reduce thrombus formation. γ-linolenic acid can improve the immune function of the body by changing the synthesis of eicosenoic acid in the organism, and possibly by regulating the synthesis of cytokines in the organism, so it plays an important role in improving the immune function of the human body and preventing immune diseases....

Claims

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Application Information

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IPC IPC(8): C07C67/58C07C69/58C07C69/587
CPCY02P20/54
Inventor 侯相林王英雄杜俊民乔欣刚王国富
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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