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Extraction method for yolk lecithin

A technology of egg yolk lecithin and an extraction method, which is applied in the field of extraction of egg yolk lecithin, can solve the problems of loss, complex extraction process and technology, high difficulty, etc., and achieves the effects of convenient operation, convenient acid value detection and low production cost.

Inactive Publication Date: 2014-04-16
GUANGZHOU HANFANG PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Because egg yolk lecithin is easily oxidized, its activity is the strongest at 25°C, and its activity is basically lost after exceeding 50°C, so the requirements for intravenous injection are high (not only high purity, but also strong emulsifying ability, and meet the relevant requirements for intravenous injection) ), its extraction process and technology are more complicated and difficult. At present, only a few foreign companies such as Germany Lipoid and South Korea Doosan have mastered the production technology of refined egg yolk lecithin and realized large-scale production. The domestic research on liposomes and The production of egg yolk lecithin accessories is almost entirely dependent on imports

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for extracting egg yolk lecithin, characterized in that the steps are as follows:

[0022] A. Egg yolk powder subjected to supercritical CO 2 Egg oil is removed by fluid extraction to obtain deoiled egg yolk powder;

[0023] B. the deoiled egg yolk powder is extracted with 80-100% ethanol solution, filtered to obtain an ethanol extract, and the solid content of the ethanol extract is measured;

[0024] C. measure the acid value of the ethanol extract to be 21, add granularity in the ethanol extract obtained in step B and be that 100~200 mesh aluminum oxide is carried out adsorption treatment, and aluminum oxide weight is 41% of deoiled egg yolk powder weight;

[0025] D. The ethanol adsorption solution treated in step C is filtered and dried to obtain the finished egg yolk lecithin.

[0026] The obtained finished egg yolk lecithin has a content of 84.49% of phosphatidylcholine PC, 6.90% of phosphatidylethanolamine PE, 0.49% of lysophosphatidylethanolamine LPE...

Embodiment 2

[0028] Same as Example 1, the difference is:

[0029] In the step C, the acid value of the ethanol extract is 19, and the weight of aluminum oxide is 39% of the weight of deoiled egg yolk powder.

[0030] The obtained finished egg yolk lecithin has a PC content of 78.6%, a PE content of 7.2%, an LPE content of 0.43%, an LPC content of 1.95%, and an acid value of 7.5. All indicators are in line with the registration standard of refined egg yolk lecithin (YBF00022008).

Embodiment 3

[0032] Same as Example 1, the difference is:

[0033] In the step C, the acid value of the ethanol extract is 20, and the weight of aluminum oxide is 40% of the weight of deoiled egg yolk powder.

[0034] The obtained finished egg yolk lecithin has a PC content of 79.4%, a PE content of 6.91%, an LPE content of 0.44%, an LPC content of 1.9% and an acid value of 7.9. All indicators are in line with the registration standard of refined egg yolk lecithin (YBF00022008).

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Abstract

The invention relates to an extraction method for yolk lecithin, and belongs to the technical field of lecithin. The invention discloses the extraction method for yolk lecithin. The extraction method comprises the specific steps: performing supercritical CO2 fluid extraction on yolk powder to remove yolk oil and obtain de-oiled yolk powder; performing ethanol extraction and filtering on the de-oiled yolk powder to obtain an ethanol extract liquid; determining the acid value of the ethanol extract liquid, adding alumina into the ethanol extract liquid according to the acid value result so as to perform adsorption processing; and filtering the ethanol adsorption liquid and drying to obtain the finished product yolk lecithin. The extraction method has the advantages of being simple in technology, convenient to operate, large in processing amount, high in yield, high in product purity, low in cost, good in controllability, strong in adaptability, relatively suitable for large-scale industrialized preparation and the like.

Description

technical field [0001] The invention relates to the technical field of lecithin, in particular to a method for extracting egg yolk lecithin. Background technique [0002] Because egg yolk lecithin is easily oxidized, its activity is the strongest at 25°C, and its activity is basically lost after exceeding 50°C, so the requirements for intravenous injection are high (not only high purity, but also strong emulsifying ability, and meet the relevant requirements for intravenous injection) ), its extraction process and technology are more complicated and difficult. At present, only a few foreign companies such as Germany Lipoid and South Korea Doosan have mastered the production technology of refined egg yolk lecithin and realized large-scale production. The domestic research on liposomes and The production of egg yolk lecithin auxiliary materials is almost entirely dependent on imports. Therefore, it is particularly urgent and important to carry out the research on the extracti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/10
CPCY02P20/54
Inventor 陈卫林廖颂明史庆龙陈锦洪梁筱雯周锦珂黄翔黄建军罗春莫嘉伟
Owner GUANGZHOU HANFANG PHARMA
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