Stabilizing agent specially used for alpha-linolenic acid/alpha ethyl linolenate, preparation method and application thereof

A technology of ethyl linolenic acid and linolenic acid is applied in the directions of fatty acid preparation/refining, fatty acid esterification, fatty acid production, etc., and can solve the problems of α-linolenic acid oxidative deterioration, high production cost and low yield, etc., Achieve the effect of reducing peroxide value and acid value, simple use method and simple production process

Active Publication Date: 2010-03-03
河北欣奇典生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of producing α-linolenic acid / α-linolenic acid ethyl ester with linseed oil as raw material, due to the processing techniques such as deacidification, dehydration, transesterification, urea inclusion, and oil washing of the raw materials, during the processing, Raw materials need to be heated, stirred, centrifuged, etc., which can easily cause α-linolenic acid / ethyl α-linolenic acid to be oxidized. Therefore, in the production process, α-linolenic acid is easily oxidized and deteriorated, resulting in low yield in the production process. High, the general pass rate is around 60-80%
Once the peroxide value exceeds the standard, it needs to be reprocessed or even discarded. This is the main reason for the high production cost of α-linolenic acid / α-linolenic acid ethyl ester.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Mix 40 kg of activated clay, 1 kg of sodium hydroxide, and 5 kg of vitamin C, then add 46 kg of deionized water and stir thoroughly for 1-2 hours, then put the mixture in a vacuum drying oven for drying. It is 65pa, the drying temperature is 55°C, and it is dried for 10 hours. After testing, the moisture is 0.6%. Stop drying, and grind the above mixture to 100 mesh with a pulverizer to prepare a special stabilizer for α-linolenic acid / ethyl α-linolenic acid, which is ready for use.

Embodiment 2

[0057] The method for preparing α-linolenic acid using the special stabilizer for α-linolenic acid / α-linolenic acid ethyl ester prepared in Example 1 comprises the following steps:

[0058] (1) Get 100 kilograms of flax oil, mix the flax oil, ethanol-potassium hydroxide solution according to the mass ratio of 1: 4-5 and then stir. Then heat for hydrolysis reaction, the reaction temperature is 50-80° C., and the reaction time is 1-3 hours. Then use dilute hydrochloric acid to acidify the hydrolyzed solution to a pH value of 2-5, stop stirring, settle for 30 minutes, and release glycerin and sodium chloride. Then add saturated sodium chloride solution to the hydrolyzate with stirring, let stand to separate layers, put down the ethanol aqueous solution to the ethanol recovery tower, and continue to wash the oil with warm saturated salt solution until neutral (PH value=5.5-6.5). Vacuum dehydration until the moisture is lower than 0.1%, and the dehydration temperature is 60-80°C. ...

Embodiment 3

[0067] A kind of method adopting the product in embodiment 2 to prepare alpha-linolenic acid ethyl ester, comprises the steps:

[0068] (1) Ethyl esterification reaction: the α-linolenic acid prepared in Example 2 is mixed with ethanol and concentrated sulfuric acid according to a volume ratio of 1:4:0.03, heated for ethyl esterification reaction, and the reaction temperature is 50-80 °C, the reaction time is 1-3 hours.

[0069] (2) Dealcoholization and dehydration: Stir and add saturated sodium chloride solution in the mixed esterification solution obtained in (1), the addition amount is 20-40% of the total volume of the mixed esterification solution, stir at 20-40°C for 30 -60 minutes, then stand for stratification, put down the layer of ethanol aqueous solution to the ethanol recovery tower, continue to wash the oil with warm saturated salt solution until neutral (PH is 5.5-6.5). Then the filtrate is dehydrated under vacuum (vacuum degree≤133pa), the dehydration temperatur...

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PUM

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Abstract

The invention relates to a stabilizing agent specially used for alpha-linolenic acid/alpha ethyl linolenate, which is prepared by mixing active floridin, alkali and reducing agent according to the mass ratio of 1:0.025-0.1:0.125-0.50. The invention also provides a preparation method of the stabilizing agent specially used for the alpha-linolenic acid/the alpha ethyl linolenate, and an applicationthereof. When in use in the production process of the alpha-linolenic acid and the alpha ethyl linolenate with high purity, the stabilizing agent specially used for the alpha-linolenic acid/the alphaethyl linolenate can effectively reduce the peroxide value and the acid value of the product, improve the finished product ratio, and greatly lower the production cost; and furthermore, the stabilizing agent is simple to prepare, convenient for production and use and beneficial to industrialized production.

Description

technical field [0001] The invention relates to a special stabilizer for unsaturated fatty acids, a preparation method of the stabilizer and its application, specifically a special stabilizer for α-linolenic acid / α-linolenic acid ethyl ester, a preparation method thereof and its application in α-linolenic acid / α - Application in the preparation of ethyl linolenate. Background technique [0002] α-linolenic acid (α-Linolenic Acid, α-LNA, all-cis 9,12,15-octadecatrienoic acid) is a polyunsaturated fatty acid. As an essential fatty acid for the human body, it is an important component of human brain cells and tissue cells, a nutrient that human beings need every day, and plays an extremely important role in human health. [0003] Scientists have proved that the excess of saturated fatty acids and excessive intake of trans fatty acids are the direct causes of many diseases such as cancer and cardiovascular and cerebrovascular diseases, and increasing the intake of α-linolenic a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/04C11C1/04
Inventor 余海龙宋广巍李旭明
Owner 河北欣奇典生物科技有限公司
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