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Method for preparing albumen powder from hot-pressing vegetable fat cake

A vegetable oil and protein powder technology, which is applied in the protein composition of vegetable seeds, protein food ingredients, food science, etc., can solve the problems of small application range, achieve good functional properties, promote protein dissolution, and light color effects

Inactive Publication Date: 2013-11-20
XINJIANG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The application scope of this technology in the domestic food field is relatively small, especially in the protein powder production process, the research on using this technology for modification is still in its infancy

Method used

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  • Method for preparing albumen powder from hot-pressing vegetable fat cake

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Effect test

Embodiment 1

[0024] Embodiment one: the method for preparing protein powder from hot-pressed vegetable oil cake

[0025] The cake after oil extraction is used as the raw material, and the vegetable oil cake protein is assisted by dual-frequency ultrasonic radiation treatment technology, and at the same time, the heat-denatured vegetable oil cake protein is refolded, and the vegetable oil cake is further improved by using ultra-fine pulverization technology. Functional properties such as protein solubility, dispersibility, water and oil retention, emulsification and emulsification stability, foaming and foaming stability, etc., improve the quality of protein powder products.

[0026] Specifically, the present invention uses dual-frequency ultrasound combined with ultrafine pulverization to prepare protein powder from hot-pressed vegetable oil cake, and the specific preparation method steps are as follows:

[0027] (1) Pretreatment: Degrease and dry the vegetable oil cake after extracting the ...

Embodiment 2

[0034] Embodiment two: the method for preparing protein powder from hot-pressed vegetable oil cake

[0035] (1) Pretreatment: degrease and dry the sunflower seed cake after oil extraction, pulverize it with a pulverizer, and pass through a 40-mesh sieve to obtain 1000 g of sunflower seed meal powder.

[0036] (2) Dual-frequency ultrasonic-assisted alkali-solution extraction of protein: use the above preparation to obtain pretreated raw materials, add deionized water to the sunflower seed meal powder according to the mass ratio of sunflower seed meal powder: deionized water of 1:15, and adjust with NaOH The pH value is 8.0, the temperature is 40°C, and dual-frequency ultrasonic treatment is used during the protein extraction process. The dual-frequency ultrasonic composite frequency is 20kHz / 35kHz, and the sound intensity is 0.1W / cm 2 , the action time is 5s, the intermittent time is 5s, and the extraction is stirred and extracted for 60min according to the above conditions. A...

Embodiment 3

[0041] Embodiment three: the method for preparing protein powder from hot-pressed vegetable oil cake

[0042] (1) Pretreatment: Degrease and dry the flaxseed cake after extracting oil, pulverize it with a pulverizer, and pass through a 60-mesh sieve to obtain 1000 g of flaxseed meal powder.

[0043] (2) Dual-frequency ultrasonic-assisted alkali-solution extraction of protein: use the above preparation to obtain pretreated raw materials, add deionized water to the flax seed meal powder according to the mass ratio of flax seed meal powder: deionized water is 1:25, and adjust with NaOH The pH value is 9.0, the temperature is 45°C, and dual-frequency ultrasonic treatment is used during the protein extraction process. The dual-frequency ultrasonic composite frequency is 35kHz / 35kHz, and the sound intensity is 0.5W / cm 2 , the action time is 10s, the intermittent time is 10s, and the extraction is stirred and extracted for 80min according to the above conditions. After stirring and ...

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Abstract

The invention discloses a method for preparing albumen powder from hot-pressing vegetable fat cake. The method comprises the following steps: degreasing and drying vegetable fat cake after oil pressing, pulverizing with a pulverizer, and carrying out double frequency ultrasonic assisted alkali solution to extract albumen while stirring for 60-120 minutes, wherein the double frequency ultrasonic complex frequency is 20-35 kHz / 35-60 kHz, the sound intensity is 0.1-0.9 W / cm<2>, the action time is 5-30 seconds, and the pause time is 5-30 seconds; carrying out acid precipitation on the supernatant, and collecting the precipitate; after carrying out vacuum freeze drying on the vegetable fat cake albumen powder solution to prepare dry powder, carrying out ultrafine pulverization on the dried vegetable fat cake albumen powder with an ultrafine pulverizer, thereby obtaining the albumen powder. The method disclosed by the invention can solve the development bottleneck in the prior art, promote the dissolution of albumen, enhance the extraction efficiency and improve the functional property, thereby having wide practicality.

Description

field of invention [0001] The invention belongs to the technical field of protein powder preparation. Specifically, the invention relates to the technical field of preparing protein powder from hot-pressed vegetable oil cake. Further, the invention relates to a method of using dual-frequency ultrasonic combined with superfine pulverization to produce protein powder from hot The technical field of preparing protein powder from pressed vegetable oil cake. Background technique [0002] The remaining by-product vegetable oil cake after oil plant oil extraction in our country contains a large amount of protein, and its crude protein content is more than 10%, and some even reach more than 60%. Every year, a large amount of vegetable oil cake after oil extraction is used as cheap feed or even discarded, resulting in a serious waste of protein resources. Heat treatment during oil extraction can lead to severe protein denaturation and affect protein utilization. Therefore, how to e...

Claims

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Application Information

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IPC IPC(8): A23J1/14
Inventor 孔令明李芳杨海燕侯伟伟罗丰收任雯雯董聪
Owner XINJIANG AGRI UNIV
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