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Process for preparing nano-sized peanut protein powder

A technology for peanut protein powder and production method, applied in protein food processing, vegetable protein processing, protein food ingredients, etc., can solve the problems affecting the nutritional value and application of peanut protein powder, and achieve the elimination of bad smell, easy industrialization, and good smell. Effect

Inactive Publication Date: 2007-08-15
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method makes the dried peanut powder denature the peanut protein due to the heat generated by impact and friction (the denaturation temperature is 55-65°C); High-speed operation makes the materials fed by the fan form a vortex in the crushing chamber. Through rapid stirring, the powder particles are forced to impact, rub, collide, and shear each other, and are effectively crushed. The impact, friction, and collision will also Generate heat and denature peanut protein, thus affecting the nutritional value and application of peanut protein powder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1 1. Purify peanut protein isolate from peanut defatted protein powder: Dissolve 10 kg of peanut defatted protein powder in water, adjust the pH to 8.2, stir and extract, centrifuge, and adjust the supernatant to pH=4.2-4.5 with hydrochloric acid, then Centrifuge, pour off the supernatant, dry the precipitate to obtain peanut protein isolate, and measure the content of the peanut protein isolate obtained by Kjeldahl method;

[0016] 2. Pretreatment of peanut protein solution: (1) through gel grinding: ① Dissolve peanut protein isolate powder in water to make a 2% solution; ② filter out insoluble precipitate through colloid mill; (2) pre-treatment Homogenization treatment, the homogenization pressure is 10MPa, so that the peanut protein changes from large particles to small particles, so that it is not easy to block the micro-jet machine;

[0017] 3. Adjust the pressure to 100MPa through dynamic ultra-high pressure homogeneous treatment.

[0018] 4. Use a large ...

Embodiment 2

[0021] Example 2 1. Purify peanut protein isolate from peanut defatted protein powder: Dissolve 20 kg of peanut defatted protein powder in water, adjust the pH to 8.5, stir and extract, centrifuge, and adjust the supernatant to pH=4.2-4.5 with hydrochloric acid, then Centrifuge, pour off the supernatant, dry the precipitate to obtain peanut protein isolate, and measure the content of the peanut protein isolate obtained by Kjeldahl method;

[0022] 2. Pretreatment of peanut protein solution: (1) Grinding with gelatin: ① dissolve peanut protein isolate powder in water to make a 10% solution; ② filter out insoluble precipitate through colloid mill; (2) Homogenization treatment, the homogenization pressure is 50MPa, so that the peanut protein changes from large particles to small particles, so that it is not easy to block the micro-jet machine;

[0023] 3. Adjust the pressure to 200MPa through dynamic ultra-high pressure homogeneous treatment.

[0024] 4. Use a large spray tower ...

Embodiment 3

[0027] Embodiment three is raw material with peanut protein concentrate, and its process step is:

[0028] 1. Preparation of peanut protein solution (1) Grinding with gelatin: ① dissolve peanut concentrated protein powder in water to make a 2-10% solution; ② filter out insoluble precipitate through colloid mill; (2) pre Homogenization treatment, the homogenization pressure is 10-50MPa, so that the peanut protein changes from large particles to small particles, so that it is not easy to block the micro-jet machine;

[0029] 2. Adjust the pressure to 150MPa through dynamic ultra-high pressure homogenization treatment;

[0030] 3. Use a large spray tower to spray and dry the material;

[0031] 4. The detection indicators include physical and chemical indicators and biochemical indicators;

[0032] 5. The index of the final product produced by the present invention: the particle size of the product is ≤200nm.

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Abstract

The invention relates to a method for preparing nanometer peanut protein powder. It takes condensed peanut protein powder (defatted protein powder) as raw material, employs dynamic ultra-pressure homogenizing to replace traditional dry processing treatment, and prepares final product through spray drying. The invention is characterized in that: (1) it modifies condensed peanut protein powder (separated powder) by using physical modification to loose structure of peanut protein, which is favorable for subsequent process; the treating condition is temperate and the water retention and other function of condensed peanut protein can be maintained; (2) it removes unpleasant odor and makes it more acceptable; (3) the treatment of dynamic ultra-pressure homogenizing makes the granule be smaller than 200 nm, and the taste is much better; (4) the process is simple and easier for industrialization.

Description

technical field [0001] The invention relates to a production method of nano-scale peanut protein powder. Background technique [0002] There are many methods for ultrafine grinding of peanut protein powder, which are divided into dry ultrafine grinding and wet ultrafine grinding. Dry ultrafine pulverization equipment is divided into two categories: airflow ultrafine pulverizer and mechanical ultrafine pulverizer. 1. The principle of the airflow mill is to use the energy generated by the nozzle to crush the material into fine particles under the intense impact, collision, friction between particles, and the shearing action of the airflow on the material. This method makes the dried peanut powder denature the peanut protein due to the heat generated by impact and friction (the denaturation temperature is 55-65°C); High-speed operation makes the materials fed by the fan form a vortex in the crushing chamber. Through rapid stirring, the powder particles are forced to impact, r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23J3/26A23J3/30A23J3/14
Inventor 涂宗财刘成梅张雪春
Owner NANCHANG UNIV
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