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Powdery lead-free preserved egg stabilizer and preparation process thereof

A lead-free preserved egg and preparation process technology, applied in the field of food processing, can solve the problems of excessive copper ion infiltration rate, poor thermal stability of copper hydroxide, black spots on the eggshell of preserved eggs, etc. good effect

Pending Publication Date: 2022-05-27
辽宁鑫金家禽养殖有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thermal stability of copper hydroxide is poor, and it is easy to partially decompose into copper oxide even at normal temperature, so its properties change greatly during the 30-day preserved egg preservation process, its performance is unstable, and it cannot be reused.
In addition, when copper hydroxide is used as a stabilizer, the infiltration rate of copper ions into the egg white yolk is still too fast, resulting in a large number of black spots on the eggshell of the preserved egg, and the bitter taste of the preserved egg

Method used

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  • Powdery lead-free preserved egg stabilizer and preparation process thereof
  • Powdery lead-free preserved egg stabilizer and preparation process thereof

Examples

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Embodiment 1

[0035] In a preferred embodiment, the powdered lead-free preserved egg stabilizer of the present invention is prepared from the following raw materials (by weight):

[0036] 30kg of copper sulfate pentahydrate; 15kg of sodium bicarbonate; 3.5kg of sodium hydroxide; 4kg of 2000-mesh ordinary graphite powder, 4kg of 500-mesh macroporous activated carbon powder; and an appropriate amount of water.

[0037] The preparation technology of the powdery lead-free preserved egg stabilizer of the present embodiment comprises the following steps:

[0038] S1: mix 30kg of copper sulfate pentahydrate, 4kg of activated carbon powder and 160kg of water, and stir to obtain the first suspension;

[0039] S2: mix 15kg sodium bicarbonate, 4kg graphite powder and 160kg water, stir to obtain the second suspension;

[0040] S3: dropping the second suspension into the first suspension at a speed of 0.5L / min continuously and at a roughly uniform speed, stirring while adding, and stirring uniformly to...

Embodiment 2

[0046] The preparation raw materials and preparation process of the powdered lead-free preserved egg stabilizer of Example 2 are the same as those of Example 1, except that the following two points are slightly different.

[0047] The difference between the preparation raw materials of Example 2 and Example 1 is that it is not ordinary graphite powder, but 400g of 2000-mesh graphite oxide powder, which is obtained by the inventor using 2000-mesh ordinary graphite powder by Hummer method. There are methods commonly used in the art for preparing graphite oxide (GO). It should be noted that the particle size of graphite oxide powder may not be maintained at 2000 mesh after being made, but the present invention still denotes it as "2000 mesh graphite oxide powder", which only means that its raw material is 2000 mesh ordinary graphite powder.

[0048] The preparation process of Example 2 is different from that of Example 1 in that S2: mix 15kg of sodium bicarbonate, 4kg of graphite...

Embodiment 3-6

[0050] The preparation raw materials and preparation process of the powdered lead-free preserved egg stabilizer of embodiment 3-6 are basically the same as those of embodiment 1-2, and the difference is only in the type and mesh number of graphite powder and the mesh number of activated carbon powder, as shown in the following table :

[0051] Example Types of graphite powder Graphite powder mesh Activated carbon powder mesh Example 1 Ordinary graphite 2000 500 Example 2 oxidised graphite 2000 500 Example 3 Ordinary graphite 1000 200 Example 4 oxidised graphite 1000 200 Example 5 Ordinary graphite 800 100 Example 6 oxidised graphite 800 100

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Abstract

The invention provides a powdery lead-free preserved egg stabilizer. The raw materials of the stabilizer comprise the following components by weight: 20-40 parts of copper sulfate; 10 to 20 parts of sodium bicarbonate; 2-5 parts of sodium hydroxide; 3-5 parts of graphite powder and 3-5 parts of activated carbon powder. According to the powdery lead-free preserved egg stabilizer, basic cupric carbonate is used as a main component, the property is more stable, and the permeation rate of copper ions into egg white yolk is reduced; through the adsorption effect of the activated carbon powder and the graphite powder and the interaction between the activated carbon powder and the graphite powder, the copper salt is further slowly and uniformly released into the egg white yolk, black spots are prevented from being formed on the preserved egg shell, formation of piny flower crystals in the egg white is facilitated, the copper content in the preserved egg is remarkably reduced, and human health is better facilitated; the stabilizer disclosed by the invention can be recycled and reused, and the prepared preserved eggs are better in taste, have no obvious bitter taste and have the taste similar to that of preserved eggs prepared by a traditional yellow lead powder formula.

Description

technical field [0001] The invention belongs to the technical field of food processing, and particularly relates to a powdered lead-free preserved egg stabilizer and a preparation process thereof. Background technique [0002] Preserved egg, also known as Songhua egg, is a processed egg food that is deeply loved by the Chinese people. Huangdan powder is added as a stabilizer in the traditional recipe of preserved egg processing materials, and its main component is lead oxide. Since lead is a toxic heavy metal element, the production of preserved eggs is all lead-free. [0003] In the current production process of lead-free preserved eggs, copper salts such as copper sulfate or copper chloride are usually reacted with sodium hydroxide to form copper hydroxide as a stabilizer. On the one hand, the stabilizer can slow down the penetration rate of lye and tannin into the egg yolk, so that the preserved egg matures as a whole; on the other hand, it can react with the amino acids...

Claims

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Application Information

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IPC IPC(8): A23L15/00
CPCA23L15/30A23V2002/00A23V2250/1576A23V2250/1588A23V2250/1624A23V2250/1614Y02A40/90
Inventor 王恩江肖如庆何世宝
Owner 辽宁鑫金家禽养殖有限公司
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