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A method for purifying egg yolk lecithin by two-phase system

A technology of egg yolk lecithin and two-phase water, which is applied in the direction of edible phospholipid composition, chemical instruments and methods, protein food ingredients, etc., can solve the problems of different distribution concentrations and different extraction properties, and achieve simple operation, high product purity, The effect of little pollution

Active Publication Date: 2018-08-28
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the extraction properties of the two-phase system are different. When the substance to be separated enters the two-phase system, due to the surface properties, charge interaction and various forces (such as hydrophobic bonds and oxygen bonds) between the phase-forming substance and the target and ionic bonds, etc.) and the influence of the environment, the distribution concentration of the target substance in the upper and lower phases is different

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The present embodiment purifies egg yolk lecithin according to the following steps:

[0039] (1) Weigh 400g of ammonium sulfate, stir and add 700g of water at room temperature, continue to stir until the ammonium sulfate is completely dissolved, add water to the solution until the volume is 1L, and obtain the aqueous phase 1;

[0040] Weigh 600g of ethanol, stir and add 250g of water at room temperature, continue stirring and mixing, add water to the solution until the volume is 1L, and obtain the aqueous phase 2;

[0041] Mix the water phase 1 and the water phase 2 to form a mutually immiscible two-phase system;

[0042] (2) Under stirring, add 300g egg yolk powder as a raw material into the two-phase system, continue to stir at room temperature for 1 hour, let stand and separate layers, and separate the lower emulsified layer (ammonium sulfate aqueous solution layer);

[0043] (3) Add 1 L of diethyl ether to the emulsified layer, stir at room temperature for 1 hour, ...

Embodiment 2

[0047] The present embodiment purifies egg yolk lecithin according to the following steps:

[0048] (1) Weigh 300g of sodium chloride, stir and add 700g of water at room temperature, continue to stir until the sodium chloride is completely dissolved, add water to the solution until the volume is 1L, and obtain the aqueous phase 1;

[0049] Weigh 600g of ethanol, stir and add 250g of water at room temperature, continue stirring and mixing, add water to the solution until the volume is 1L, and obtain the aqueous phase 2;

[0050] Mix the water phase 1 and the water phase 2 to form a mutually immiscible two-phase system;

[0051] (2) Under stirring, add 300g of egg yolk powder as a raw material into the two-phase system, continue to stir for 1 hour at room temperature, leave to separate layers, and separate the lower emulsified layer (sodium chloride aqueous solution layer);

[0052] (3) Add 1 L of diethyl ether to the emulsified layer, stir at room temperature for 1 hour, let s...

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Abstract

The invention discloses a method for purifying egg yolk lecithin through an aqueous two-phase system. The method for purifying the egg yolk lecithin through the aqueous two-phase system is characterized in that the aqueous two-phase system is composed of an inorganic salt solution and a fatty alcohol solution, egg yolk powder or egg yolk raw phospholipid serves as the raw material and is added to the system, standing layering is conducted, ethyl ether or methyl tert-butyl ether is added to a lower opacifying layer, layering is conducted again, concentrating is conducted till an obtained product is dry, and the purified egg yolk lecithin is obtained. According to the method for purifying the egg yolk lecithin through the aqueous two-phase system, the condition is mild, the product purity is high, the use amount of organic solvent and energy consumption are both greatly reduced, the method is more friendly to the environment, caused pollution is less, and the requirement of green circulation economy is met.

Description

1. Technical field [0001] The invention relates to a method for separating oily impurities and phospholipid compounds in egg yolk powder by a two-phase aqueous system, and further purifying to obtain high-purity egg yolk lecithin. 2. Background technology [0002] Egg yolk lecithin is an important natural active product, which has the functions of preventing hepatitis, lowering cholesterol, preventing cardiovascular disease and anti-cancer. It is widely used in many fields such as medicine and food. Food additives and health products. More importantly, with the development of nanotechnology, the development of targeted and sustained-release drug delivery technology has become more and more widely used in the field of pharmaceutical preparations. New formulations of sustained-release targeted drugs based on phospholipids are the most important research and application directions. It is expected that In the future, the quality requirements for lecithin will become higher and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F9/10
CPCC07F9/103
Inventor 冯乙巳潘攀徐涛曹平
Owner HEFEI UNIV OF TECH
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