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Technique for producing alpha-linolenic acid ethyl with 90 percent more purity

A technology of ethyl linolenic acid and production process, which is applied in the field of production technology of ethyl alpha-linolenic acid, can solve the problems of low purity of alpha-linolenic acid, influence on the addition and use of alpha-linolenic acid, etc. Good health and the effect of filling domestic gaps

Inactive Publication Date: 2008-03-12
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 domestic process for producing ethyl α-linolenic acid with a purity greater than 90%

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The first step: oil extraction: perilla seed 300Kg, using mechanical cold pressing process to extract perilla oil,

[0041] The second step: filtering: the solid impurities in the perilla oil are filtered out to obtain 100Kg of perilla oil,

[0042] The third step: Saponification: Take 100Kg of perilla oil, 80Kg of deionized water, 1Kg of enzyme catalyst (lipolase100L) into the container, stir and heat, control the temperature of the material to 40°C, control the pH value of the material to 7, and the reaction time is 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.

[0043] 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 the material at 40°C, stop adding sulfuric acid when the pH value of the material is less than 4, a...

Embodiment 2

[0060] The first step: oil extraction: perilla seed 300Kg, using mechanical cold pressing process to extract perilla oil,

[0061] The second step: filtering: the solid impurities in the perilla oil are filtered out to obtain 100Kg of perilla oil,

[0062] The third step: saponification: add perilla oil 100Kg, deionized water 400Kg, enzyme catalyst (lipolase100L) 10Kg into the container, stir and heat, control the temperature of the material between 70 °C, control the pH value of the material to 7, and the reaction time in After 20 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.

[0063] 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 material is less ...

Embodiment 3

[0080] The first step: oil extraction: perilla seed 300Kg, using mechanical cold pressing process to extract perilla oil,

[0081] The second step: filtering: the solid impurities in the perilla oil are filtered out to obtain 100Kg of perilla oil,

[0082] The third step: saponification: add perilla oil 100Kg, deionized water 120Kg, enzyme catalyst (lipolase100L) 8Kg into the container, stir and heat, control the temperature of the material between 55 °C, control the pH value of the material to 7, and the reaction time in After 12 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.

[0083] 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 material is les...

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PUM

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Abstract

The present invention relates to a production process of using the Perilla as the raw material to produce an alpha-flax ethyl ester with the purity more than 90 percent. The alpha-flax ethyl ester with the purity more than 90 percent can be got after the oil squeezing, filtration, saponification, acidification, water washing, twice urea complexes, freezing, compression and filtration, heating, extraction, esterification, water washing, dehydration and molecular distillation. The present invention has the advantages of the high purity, the low cost and the long security period.

Description

technical field [0001] The invention relates to a production process of alpha-linolenic acid ethyl ester with a purity greater than 90% produced from perilla seeds. 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. Moreover, there is no domestic...

Claims

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Application Information

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IPC IPC(8): C07C69/587C07C67/08
Inventor 崔卫民宋宪生张金阳郜善军张群峰宋军苏军赵晖许志伟张辉
Owner 安阳化学工业集团有限责任公司
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