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Method for preparing conjugate linolic acid using idesia polycarpa maxim. var. vestita diels oil

A technology of conjugated linoleic acid and saffron oil, applied in the fields of food, feed, and medicine, can solve the problems of difficult industrial application, single product, etc., achieve good application and market demand, low equipment requirements, and simple preparation process. economic effect

Inactive Publication Date: 2009-03-11
四川省毛叶山桐子科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bioisomerization produces conjugated linoleic acid, including enzymatic and microbial fermentation methods. The product is single, high in purity, and the method is relatively advanced, but it is still difficult to realize industrial application at present.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Degumming of tung oil

[0023] Under the protection of nitrogen, preheat 100 grams of crude oil to 70 ° C, add 0.25 grams of phosphoric acid, after fully stirring, add dilute sodium hydroxide aqueous solution until the pH value of the system is less than 7, continue stirring for 30 minutes, and let it stand for 20 minutes, then Cool down to room temperature, centrifuge at a high speed of 4500 rpm for 15 minutes, separate the water layer, and obtain degummed oil with a phosphorus content lower than 0.4ppm after determination.

[0024] 2. Preparation of mixed fatty acids

[0025] 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 se...

Embodiment 2

[0031] 5. Degumming of tung oil

[0032] Under the protection of nitrogen, preheat 100 grams of crude oil to 70°C, add 0.25 grams of citric acid, and stir thoroughly, then add dilute potassium hydroxide aqueous solution until the pH value of the system is less than 7, continue stirring for 30 minutes, and let it stand for 20 minutes. Then it was cooled to room temperature, centrifuged at 4500 rpm for 15 minutes at a high speed, and the water layer was separated. After determination, the degummed oil with phosphorus content lower than 0.43ppm was obtained.

[0033] 6. Preparation of mixed acid

[0034] 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 ...

Embodiment 3

[0040] 5. The degumming of Jatropha oil is the same as step 1 in Example 1.

[0041] 6. Preparation of mixed acid

[0042] 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%.

[0043] 7. The extraction of linoleic acid is the same as step 3 in Example 1.

[0044] 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 conjugated linoleic acid by using Idesia polycarpa Maxim oil, which belongs to the fields of medicine, food and feedstuff. The technology comprises four aspects of acid-process degumming of crude oil, preparation of mixed fatty acid, extraction of linoleic acid and conjugation. The method is characterized in that degummed oil is obtained through acid degumming process, and phospholipid is thoroughly removed; direct saponification preserves dissociative linoleic acid and avoids the yield loss; the technical processes of carbamide inclusion, alkali isomerization of the linoleic acid and the like are optimized to avoid the application of toxic reagents so as to obtain the conjugated linoleic acid with high quality and high conversion rate; at the same time, the technical processes are simple with low equipment requirement, recover the solvent effectively, reduce the cost significantly, and have wider application prospect in the production of high-quality conjugated linoleic acid.

Description

technical field [0001] The invention belongs to the fields of medicine, food and feed, and particularly relates to a method for producing conjugated linoleic acid by using Jatropha tomentosa 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 oth...

Claims

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Application Information

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IPC IPC(8): C07C57/12C07C51/42
Inventor 宋航杜开峰汪全义张义文刘长根肖本伟肖乙涵
Owner 四川省毛叶山桐子科技股份有限公司
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