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Method for using molecular distillation to extract nervonic acid from acer truncatum buge oil

A molecular distillation and ingot maple technology, applied in the field of nervonic acid extraction, can solve the problems of only 55% nervonic acid purity and high distillation temperature, and achieve the effects of high nervonic acid content, low operating temperature and avoiding damage

Active Publication Date: 2012-11-14
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

However, there are problems such as high distillation temperature and the purity of nervous acid obtained by repeated experiments is only 55%.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Put 1,000 grams of maple ingot seeds into an extractor, extract 120 grams of maple ingot oil through supercritical carbon dioxide extraction, extraction temperature is 60°C, pressure is 7MPa, separation temperature is 30°C, pressure is 7MPa;

[0023] (2) After mixing 30 milliliters of absolute ethanol with 100 milliliters of ingot maple oil, add 1.2 grams of NaOH, and react for 3.5 hours at a temperature of 60° C., the product is distilled to remove unreacted ethanol, and the catalyst is eluted with water after separation of glycerin to obtain Ingot Maple Oil Ethyl Ester 75ml;

[0024] (3) Separation of nervonic acid ethyl ester: carry out molecular distillation to the obtained ingot maple oil ethyl ester under different vacuum degrees and temperature conditions, operating condition is:

[0025] series

[0026] (4) Mix fatty acid ethyl ester obtained by five-stage molecular distillation with excess NaOH aqueous solution, heat and reflux for 1.5 hours for s...

Embodiment 2

[0028] (1) Put 1,000 grams of maple ingot seeds into an extractor, extract 120 grams of maple ingot oil through supercritical carbon dioxide extraction, extraction temperature is 60°C, pressure is 30MPa, separation temperature is 60°C, pressure is 7MPa;

[0029] (2) After mixing 25 milliliters of absolute ethanol with 100 milliliters of ingot maple oil, add 2 grams of NaOH, and react for 2.5 hours at a temperature of 65° C., the product is distilled to remove unreacted ethanol, and the catalyst is eluted with water after separation of glycerin to obtain Ingot Maple Oil Ethyl Ester 75ml;

[0030] (3) Separation of nervonic acid ethyl ester: carry out molecular distillation to the obtained ingot maple oil ethyl ester under different vacuum degrees and temperature conditions, operating condition is:

[0031] series

[0032] (4) Mix fatty acid ethyl ester obtained by five-stage molecular distillation with excess NaOH aqueous solution, heat and reflux for 1.5 hours for sa...

Embodiment 3

[0034] (1) 500 grams of maple ingot seeds are pulverized and extracted with No. 6 solvent oil to obtain 70 grams of maple ingot oil;

[0035] (2) After mixing 70 milliliters of absolute ethanol with 70 milliliters of ingot maple oil, add 55 milliliters of sodium ethylate, and react for 5 hours at a temperature of 50° C., the product is distilled to remove unreacted ethanol, and the catalyst is eluted with water after separating glycerin. Obtain 55 ml of ingot maple oil ethyl ester;

[0036] (3) Separation of nervonic acid ethyl ester: carry out molecular distillation to the obtained ingot maple oil ethyl ester under different vacuum degrees and temperature conditions, operating condition is:

[0037] series

[0038] (4) Mix the nervonic acid ethyl ester obtained by five-stage molecular distillation with excess KOH aqueous solution, heat and reflux for 2 hours for saponification, add hydrochloric acid to adjust the pH value to 2, wash with water to neutrality, extract...

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PUM

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Abstract

The invention relates to a method for using molecular distillation to extract nervonic acid from acer truncatum buge oil, which obtains the acer truncatum buge oil with acer truncatum buge seeds as raw materials by extracting and pressing; absolute ethyl alcohol or methanol and the acer truncatum buge oil are mixed, then the catalyst is added for reaction, unreacted ethyl alcohol or methanol is removed, glycerine is separated, and fatty acid ester of the acer truncatum buge oil is obtained by rinsing; five-grade molecular distillation is carried out to the fatty acid ester of the acer truncatum buge oil under the condition of different vacuum degrees and temperature so as to obtain the fatty acid ester with the content of nervonic acid ester of more than 80 wt percent; the fatty acid esteris saponated, acid is added to adjust pH value to be 2 to 3, rinsing is carried out so as to lead the fatty acid ester to be neutral, petroleum ether is used for extracting the fatty acid, the petroleum ether is then removed and the product with the content of nervonic acid of more than 80 wt percent is obtained. The invention has the advantages of low operating temperature, simple technique andhigh content of nervonic acid.

Description

[0001] Field [0002] The invention belongs to a method for extracting nervonic acid, in particular to a method for extracting nervonic acid from ingot maple oil by using molecular distillation technology. Background technique [0003] Neural acid, also known as sharkic acid, scientifically named cis-15-tetradecenoic acid, was first discovered in the nervous tissue of mammals, so it was named neural acid. Neural acid has a high content in nerve tissue and brain tissue. It is the core natural component of nerve fibers and nerve cells in the brain. To a certain extent, nervonic acid not only has the functions of activating brain cells, treating immune deficiency diseases, and cardiovascular diseases, but also synthesizes muskone, cyclopentadecanone, pentadecyl lactone, Asian corn borer sex pheromone, The raw material of housefly sex pheromone, etc., so the separation and purification of nervonic acid has extremely high practical value. Nervous acid has not yet achieved industr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C57/03C07C27/02C07C51/42
CPCY02P20/54
Inventor 侯相林张元
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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