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Process for preparing alpha-ethyl linolenate with purity more than 80%

A technology for the production process of ethyl linolenic acid, which is applied in the preparation of carboxylic acid esters, the preparation of organic compounds, and organic chemistry. It can solve the problems of low purity of α-linolenic acid and affect the addition and use of α-linolenic acid. Extensive access, low cost and high purity

Inactive Publication Date: 2006-09-27
安阳化学工业集团有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is mostly used as an additive in the pharmaceutical and food industries. Due to the low purity of α-linolenic acid in natural species, it affects the addition and use of α-linolenic acid. The existence of ethyl ester is more stable than free acid, which is convenient for large-scale production and use. And there is no process for producing ethyl α-linolenic acid with a purity greater than 80% in China

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: process with 300 kilograms of perilla seeds as raw material.

[0027] The first step: oil extraction: perilla seeds 300 kg, using mechanical cold pressing process to extract perilla oil,

[0028] The second step: filter: filter out the solid impurities in the perilla oil to obtain 100 kilograms of perilla oil,

[0029] The third step: Saponification: Take 100 kg of perilla oil, 50 kg of deionized water, and 1 kg of enzyme catalyst (lipolase 100L) into the container, stir and heat, control the temperature of the material to 40°C, and control the pH value of the material to 7. The reaction time is After 2 hours, take a sample to analyze the acid value. When the acid value reaches 120-210mgKOH / g, the reaction ends, and the whole process is protected by nitrogen gas.

[0030] The fourth step: acidification: slowly add sulfuric acid with a concentration of 10% into the saponified material obtained in the third step and stir, control the reaction temperature of...

Embodiment 2

[0042] The first step: oil extraction: perilla seeds 300 kg, using mechanical cold pressing process to extract perilla oil,

[0043] The second step: filter: filter out the solid impurities in the perilla oil to obtain 100 kilograms of perilla oil,

[0044]The third step: saponification: add 100 kg of perilla oil, 400 kg of deionized water, and 10 kg of enzyme catalyst (lipolase 100L) into the container, stir and heat, control the temperature of the material between 70 ° C, and control the pH value of the material to 7, The reaction time is 20 hours. Samples are taken to analyze the acid value. When the acid value reaches 120-210mgKOH / g, the reaction ends. The whole process is protected by nitrogen gas.

[0045] The fourth step: acidification: slowly add sulfuric acid with a concentration of 90% into the saponified material obtained in the third step and stir, control the reaction temperature of the material at 95°C, and stop adding sulfuric acid when the pH value of the mater...

Embodiment 3

[0057] The first step: oil extraction: perilla seeds 300 kg, using mechanical cold pressing process to extract perilla oil,

[0058] The second step: filter: filter out the solid impurities in the perilla oil to obtain 100 kilograms of perilla oil,

[0059] The third step: saponification: add 100 kg of perilla oil, 120 kg of deionized water, and 8 kg of enzyme catalyst (lipolase 100L) into the container, stir and heat, control the temperature of the material between 55 ° C, and control the pH value of the material to 7, The reaction time is 12 hours. Samples are taken to analyze the acid value. When the acid value reaches 120-210mgKOH / g, the reaction ends. The whole process is protected by nitrogen gas.

[0060] The fourth step: acidification: slowly add sulfuric acid with a concentration of 80% to the saponified material obtained in the third step and stir, control the reaction temperature of the material between 75°C, and stop adding sulfuric acid when the pH value of the ma...

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Abstract

The invention relates to a process for preparing alpha-zinc linolenate by using perilla seeds as the raw material, which comprises the steps of squeezing, filtering, saponifying, acidifying, water scrubbing, urea complexing, freezing, filter-pressing, elevating temperature, extracting, esterifying, water scrubbing, dewatering, and vacuum distilling. The obtained product has a purity of over 80%.

Description

technical field [0001] The invention relates to a production process for producing alpha-linolenic acid ethyl ester with a purity greater than 80 percent by using perilla seeds as raw materials. Background technique [0002] α-linolenic acid mainly exists in a variety of vegetable oils in the form of triglycerides, including linseed oil, perilla seed oil, rapeseed oil, cottonseed oil, soybean oil, etc., among which the content of linseed oil and perilla seed oil As high as 50% to 60%, and the content in other oils is below 10%. The population is seriously deficient in unsaturated fatty acids, especially α-linolenic acid, which needs to be supplemented from other sources. It is mostly used as an additive in the pharmaceutical and food industries. Due to the low purity of α-linolenic acid in natural species, it affects the addition and use of α-linolenic acid. The existence of ethyl ester is more stable than free acid, which is convenient for large-scale production and use. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/08C07C69/587
Inventor 苏同利崔卫民宋宪生张金阳宋军张群峰赵晖许志伟张辉
Owner 安阳化学工业集团有限责任公司
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