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Feather albumen powder and preparation method thereof

A technology of feather protein powder and feather, which is applied in application, animal feed, animal feed, etc., can solve the problems of protein denaturation, low feather dissolution rate, poor palatability, etc., achieve mild enzymolysis reaction conditions, avoid chemical reactions, and produce methods simple effect

Active Publication Date: 2010-02-24
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the backward process equipment, the process parameters are not easy to control, the hydrolysis effect is not good, the product quality is unstable, the amino acid digestibility is low or the protein is seriously denatured
[0007] In the neutralization stage of the acid-base hydrolysis method, a large amount of acid-base is consumed, the product contains too much salt, and the palatability is poor. When the product is used as feed or feed additive, it will inhibit the growth of animals, and produce a large amount of acid-base wastewater, polluting the environment, Therefore, the application is limited
[0008] In recent years, there have also been reports on the extraction of feather keratin by oxidation. The oxidants used mainly include peracetic acid, halogen and hydrogen peroxide, etc., but there are also defects such as long oxidation reaction time and low feather dissolution rate.
Biotechnology includes microbial and enzymatic degradation methods. However, there is no simple method for industrial production, especially the industrial decomposition of keratin using keratinase or keratin-degrading microorganisms

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Use the waste processed by down and down, wash it with water, dry it and use the micro pulverizer produced by Shanghai Jiading Cereals and Oils Instrument Co., Ltd. to pulverize to 1.0cm; then add the pulverized waste feathers to Hebi Zhengdao Heavy Machinery Factory, Henan, under the trade name of QBS series The pulse steam explosion machine sold by the steam explosion process test bench is filled with the explosion cavity of the steam explosion machine, and the steam explosion treatment is carried out at room temperature and 1.8MPa pressure for 500s. Co., Ltd. sells the protease under the trade name papain. The amount of papain is 0.1% by weight of the waste. The enzymatic hydrolysis reaction is carried out at a temperature of 50 ° C and stirring for 1.0 h, and the obtained enzymatic hydrolysis solution is kept at 100 ° C. The enzyme was killed for 8 min, and then dried under constant temperature conditions, and the obtained product was pulverized to 20 meshes using a ...

Embodiment 2

[0087] Use chicken feathers as raw materials, wash them with water, and dry them, add the crushed waste feathers to a pulse steam explosion machine (a steam explosion device produced by Zhengdao Heavy Machinery Factory in Hebi City, Henan), fill the explosion cavity of the steam explosion machine, and at room temperature and 1.2 Under the pressure of MPa, conduct steam explosion treatment for 60s, then release the pressure, take out by blasting, and add Alcalase papain sold by Novozymes. The enzymatic hydrolysis reaction was carried out for 3.0 h, and the obtained enzymatic hydrolyzed solution was inactivated at 100 °C for 10 min. After deactivating the enzyme, it was dried at a constant temperature. The obtained product was pulverized by a pulverizer (Shanghai Jiading Grain and Oil Instrument Co., Ltd.) 20 mesh, thus obtaining feather protein powder.

[0088] Using the national standard GB / T 17811-2008 "Determination of pepsin digestibility of animal protein feeds by filtrati...

Embodiment 3

[0091] Use duck feathers as raw materials, wash them with water, and use a pulverizer (Shanghai Jiading Grain and Oil Instrument Co., Ltd.) to pulverize to 0.5 cm after drying; then add the pulverized waste feathers to a pulse steam explosion machine (produced by Hebi Zhengdao Heavy Machinery Factory, Henan Province). Steam explosion device), fill the explosion cavity of the steam explosion machine, carry out steam explosion treatment at room temperature and 1.5MPa pressure for 180s, then release the pressure, blast it out, and add the product sold by Shanghai Kaiyang Biotechnology Co., Ltd. under the trade name of trypsin. Trypsin, the amount of trypsin is 0.05% based on the weight of the duck feathers, and the enzymatic hydrolysis reaction is carried out at a temperature of 50 ° C and stirring conditions for 1.5 h, and the obtained enzymatic hydrolysis solution is at 100 ° C. Drying is carried out under constant temperature conditions, and the obtained product is then pulveri...

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PUM

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Abstract

The invention relates to a preparation method of feather albumen powder and the feather albumen powder prepared by the method. The method comprises the following steps: firstly carrying out pretreatment of washing, drying and cutting; then effectively carrying out steam explosion on feather by a steam explosion technique to damage the stable space structure of feather keratin; and finally carryingout zymohydrolysis treatment to enable the feather to become dissoluble small peptide and amino acid, thereby enhancing the digesting rate of pepsin of feather albumen and largely enhancing the biologic valence. The preparation method has the advantages of simplicity, low production cost, short processing period and high equipment efficiency. The content of crude albumen in the feather powder achieves more than 90%, and the digesting rate of in vitro pepsin achieves more than 88%.

Description

【Technical field】 [0001] The invention relates to the technical field of animal feed. More specifically, the present invention relates to a method for preparing feather protein powder, and also relates to feather protein powder prepared by the method. 【Background technique】 [0002] The poultry breeding industry is one of the pillar industries of my country's animal husbandry industry. It is also the industry with the highest degree of scale and intensification and the closest to the international advanced level. However, the shortage and lack of protein feed resources have seriously restricted the sustainable development of the poultry breeding industry. Rely on imported fishmeal to fill the protein gap in energy feed. According to the forecast of the National Feed Industry Office, by 2010, my country's demand for protein feed will be 60 million tons, while the supply will only reach 22 million tons. Facing such a huge resource gap, how to find a suitable animal protein so...

Claims

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Application Information

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IPC IPC(8): A23K1/10A23K10/26
Inventor 杨瑞金张文斌华霄赵伟张益奇徐桂敏
Owner JIANGNAN UNIV
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