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Method for preparing linoleic acid from idesia polycarpa Maxium. Var. vestita Diels oil

A technology of jatropha oil and linoleic acid, which is applied in the direction of fatty acid preparation/refining, fatty acid production, etc., can solve the problems of high production cost and occupying a large amount of valuable cultivated land, and achieve low cost, good application and market demand, and simple preparation process economic effect

Inactive Publication Date: 2010-11-10
四川省毛叶山桐子科技股份有限公司
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

To obtain these raw materials in large quantities, it needs to occupy a large amount of valuable cultivated land, and the production cost is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. Degumming of tung oil

[0021] Under the protection of nitrogen, preheat 100 grams of crude oil to 70°C, add 0.25 grams of phosphoric acid, stir well, add dilute alkali until the pH value of the system is less than 7, continue to stir for 30 minutes, let it stand for 20 minutes, and then lower it to room temperature , centrifuge at 4500 rev / min high-speed centrifugation for 15 minutes, separate the water layer, and measure to obtain degummed oil with a phosphorus content lower than 0.4ppm.

[0022] 2. Preparation of mixed fatty acids

[0023] Mix 100g of degummed oil, 20g of potassium hydroxide, 90ml of ethanol and 25ml of water, under the protection of nitrogen, stir and heat to 60°C, reflux for 7 hours, after the oil is completely saponified, cool, and extract unreacted oil with 20ml of petroleum ether The saponification product is acidified with dilute sulfuric acid until the pH of the system is less than 2, the oil layer is separated, the water layer is further ...

Embodiment 2

[0027] 1. The degumming of Jatropha oil is the same as step 1 in Example 1.

[0028] 2. Preparation of mixed acid

[0029] Take 100g of degummed oil, 25g of potassium hydroxide, 200ml of ethanol and 10ml of distilled water and mix them. Under the protection of nitrogen, stir and heat to 90°C, and reflux for 2 hours. After the oil is completely saponified, cool it down. The treatment process and solvent recovery of the mixed acid prepared from the saponified product are the same as step 2 in Example 1. The hydrolysis rate of the degummed oil reaches 99.5%.

[0030] 3. The extraction of linoleic acid is the same as Step 3 in Example 1.

[0031] After testing, the yield of linoleic acid was 90.4%, and the purity was 94.5%.

Embodiment 3

[0033] 1. The degumming of Jatropha oil is the same as step 1 in Example 1.

[0034] 2. Preparation of mixed acid

[0035] Take 100g of degummed oil, 25g of potassium hydroxide, 200ml of ethanol and 10ml of distilled water and mix them. Under the protection of nitrogen, stir and heat to 80°C, and reflux for 4 hours. After the oil is completely saponified, cool it down. The treatment process and solvent recovery of the mixed acid prepared from the saponified product are the same as step 2 in Example 1. The hydrolysis rate of the degummed oil reaches 98.7%.

[0036] 3. The extraction of linoleic acid is the same as Step 3 in Example 1.

[0037] After testing, the yield of linoleic acid was 90.6%, and the purity was 95.0%.

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PUM

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Abstract

The invention discloses a method for preparing linoleic acid from idesia polycarpa Maxium. Var. vestita Diels oil, which belongs to the fields of medicaments, food and feed. A technique comprises degumming of crude oil by an acid method, preparation of mixed fatty acid and extraction of the linoleic acid. The method is characterized in that: degummed oil is obtained by an acidic degumming method, so phospholipid is removed completely; direct soap treatment is adopted to reserve the free linoleic acid and avoid the yield loss and the process is optimized to avoid the utilization of a toxic reagent, so the linoleic acid with high quality and high conversion rate is obtained at last; at the same time, the process has a simple process and low requirement on equipment and the solvent can be effectively reclaimed, so the cost is obviously reduced; and therefore, the method has a wide application prospect in the production of the high-quality linoleic acid.

Description

technical field [0001] The invention belongs to a method for producing linoleic acid by using jatropha oil as a raw material. Background technique [0002] At present, there are about 4 billion mu of low-quality land, barren slopes, and tidal flats in my country. If they are fully utilized, planting some high-yield and high-value economic crops can not only improve the ecological environment and increase economic benefits, but also relieve the pressure on my country's cultivated land to a certain extent. A situation of relatively tight resources. Jatropha magnolia is a unique woody oil plant species in my country, which has the characteristics of wide distribution, low requirements on soil and climate, and strong adaptability. It can be used to replace fertile land crops to produce high value-added products without occupying the area of ​​arable land. It can truly "do not compete with others for food, do not compete with grain for land, do not compete with traditional indust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C1/00C11C1/04C11C1/08
Inventor 肖本伟刘长根宋航兰先秋
Owner 四川省毛叶山桐子科技股份有限公司
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