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Process for preparing alpha-linolenic acid with purity more than 80%

A production process and technology of linolenic acid, which is applied in the direction of carboxylate preparation, organic compound preparation, separation/purification of carboxylic acid compounds, etc., can solve the problems affecting the addition and use of α-linolenic acid and low purity, and achieve the addition route Extensive, high-purity, health-promoting effects

Inactive Publication Date: 2008-01-23
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, the addition and use of α-linolenic acid is affected, and there is no domestic production process for α-linolenic acid with a purity greater than 80%.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: process with 300 kilograms of perilla seeds as raw material.

[0028] The first step: oil extraction: perilla seeds 300 kg, using mechanical cold pressing process to extract perilla oil,

[0029] The second step: filter: filter out the solid impurities in the perilla oil to obtain 100 kilograms of perilla oil,

[0030] Step 3: 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, control the pH value of the material to 7, and the reaction time In 2 hours, the reaction was finished, and the whole process was protected by nitrogen gas,

[0031] 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...

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 at 70°C, control the pH of the material to 7, and react The time is 20 hours after the reaction is over, and 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 material is less than 4. When the pH value of the material is greater than 4, continue to slowly...

Embodiment 3

[0056] The first step: oil extraction: perilla seeds 300 kg, using mechanical cold pressing process to extract perilla oil,

[0057] The second step: filter: filter out the solid impurities in the perilla oil to obtain 100 kilograms of perilla oil,

[0058] The third step: saponification: add 100 kg of perilla oil obtained in the second step, 100 kg of deionized water, and 2 kg of enzyme catalyst (lipolase 100L) into the container, stir and heat, control the temperature of the material at 60°C, and control the pH value of the material 7. The reaction time is 8 hours, the reaction is over, and the whole process is protected by nitrogen gas.

[0059] The fourth step: acidification: slowly add sulfuric acid with a concentration of 30% into the saponified material obtained in the third step and stir, control the reaction temperature of the material at 50°C, and stop adding sulfuric acid when the pH value of the material is less than 4. When the pH value of the material is greater...

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Abstract

The invention relates to a process for preparing alpha-linolenic acid 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, abstracting, water scrubbing, dewatering, and molecular distillating.

Description

technical field [0001] The invention relates to a production process for producing α-linolenic acid 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 medicine and food industries. Due to the low purity of α-linolenic acid in natural species, the addition and use of α-linolenic acid is affected, and there is no domestic production process for α-linolenic acid with a purity greater than 80%. Contents of the invention [0003] The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C51/42C07C51/487C07C57/12
Inventor 崔卫民宋宪生张金阳宋军苏军范敏赵晖贾志强
Owner 安阳化学工业集团有限责任公司
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