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Method for separating natural whey protein from fresh milk and application thereof

A whey protein and fresh milk technology, applied in the field of separation of natural whey protein, can solve the problem of destroying the functional properties of fresh milk whey, and achieve the effect of reducing pressure and mild separation conditions

Pending Publication Date: 2020-01-10
NORTHEAST AGRICULTURAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that existing separation methods destroy the functional properties of whey in fresh milk, the present invention provides a method for isolating natural whey protein from fresh milk, comprising the following steps:

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1. Method of isolating native whey protein from goat's milk.

[0026] 1) Skimming: heat the goat milk to 45° C., and use a milk fat separator to carry out centrifugal skimming to obtain skimmed goat milk and cream.

[0027] 2) Microfiltration: defatted goat milk microfiltration, the microfiltration membrane is a 0.14μm ceramic membrane, the material inlet pressure is 0.10MPa, the membrane outlet pressure is 0.08MPa, the flow rate is controlled at 53L / min, and the heat exchanger is used to control the circulation temperature of the material liquid at 45 ℃, reduce the formation of filter cake layer during the microfiltration process, improve the flow rate of feed liquid, add deionized water at 45 ℃ in real time, the permeate liquid of microfiltration is goat milk whey, and the retained liquid is goat cheese protein solution.

[0028] 3) Ultrafiltration: The microfiltration permeate passes through a 9000Da roll-type ultrafiltration membrane, the flow rate of the ul...

Embodiment 2

[0030] Example 2. Method of isolating native whey protein from goat's milk.

[0031] 1) Skimming: heat the goat milk to 50° C., and use a milk fat separator to perform centrifugal skimming to obtain skimmed goat milk and cream.

[0032] 2) Microfiltration: defatted goat milk microfiltration, the microfiltration membrane is a 0.2μm ceramic membrane, the material inlet pressure is 0.08MPa, the membrane outlet pressure is 0.06MPa, the flow rate is controlled at 50L / min, and the circulation temperature of the material liquid is controlled by a heat exchanger to 40 ℃, reduce the formation of filter cake layer during the microfiltration process, improve the flow rate of feed liquid, add deionized water at 40 ℃ in real time, the permeate liquid of microfiltration is goat milk whey, and the retained liquid is goat cheese protein solution.

[0033] 3) Ultrafiltration: The microfiltration permeate passes through a 10000Da roll-type ultrafiltration membrane, the flow rate of the ultrafil...

Embodiment 3

[0035] Example 3. Method of isolating native whey protein from goat's milk.

[0036] 1) Skimming: heat the goat milk to 55° C., and use a milk fat separator to perform centrifugal skimming to obtain skimmed goat milk and cream.

[0037] 2) Microfiltration: defatted goat milk microfiltration, the microfiltration membrane is a 0.1μm ceramic membrane, the material inlet pressure is 0.12MPa, the membrane outlet pressure is 0.10MPa, the flow rate is controlled at 55L / min, and the circulation temperature of the material liquid is controlled by a heat exchanger at 50 ℃, reduce the formation of filter cake layer during the microfiltration process, improve the flow rate of feed liquid, add deionized water at 50 ℃ in real time, the permeate liquid of microfiltration is goat milk whey, and the retained liquid is goat cheese protein solution.

[0038] 3) Ultrafiltration: Microfiltration permeate passes through 8000Da roll-type ultrafiltration membrane, ultrafiltration equipment flow contr...

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Abstract

The invention discloses a method for separating natural whey protein from fresh milk and an application thereof, which belong to the technical field of production of dairy products. Aiming at the problem that the existing separation method destroys the functional properties of whey in fresh milk, the invention provides a method for separating natural whey protein from fresh milk, which comprises the following steps: 1) degreasing: centrifugally degreasing the fresh milk to obtain degreased fresh milk which is milk or goat milk; 2) microfiltration: performing microfiltration on the degreased fresh milk by using a microfiltration membrane, wherein trapped fluid after microfiltration is a casein solution, and a permeate liquid is whey; 3) ultrafiltration: performing ultrafiltration on the whey through an ultrafiltration membrane, wherein the trapped fluid obtained after ultrafiltration is whey protein concentrated solution, and 4) desalting: desalting the concentrated whey protein to obtain the natural whey protein. According to the invention, no phase change is conducted in the separation process, the natural functional property of the whey protein is reserved, and the method can beused for producing infant milk powder.

Description

technical field [0001] The invention belongs to the technical field of production of dairy products, and in particular relates to a method and application for isolating natural whey protein from fresh milk. Background technique [0002] Whey is a by-product of cheese processing. Nine tons of whey are discharged for every ton of cheese produced. The remaining whey after cheese processing is discharged and causes waste and pollutes the environment. In order to solve this problem, whey is separated into whey protein to make Whey protein powder not only solves the waste and pollution problems of traditional whey production, but also creates high economic value. However, the whey protein nutrients in the whey protein powder prepared in this way are destroyed to a certain extent, because the whey protein interacts with the cheese starter, rennet or additives, thereby changing the functional properties of the whey protein. Therefore, it is of great significance to choose an effici...

Claims

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Application Information

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IPC IPC(8): A23C9/16A23C7/04A23J1/20
CPCA23C9/16A23C7/04A23J1/205
Inventor 郭明若程建军蒋世龙谢庆刚田木王皓周欣慧赵善舶宋晓
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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