Whey protein powder prepared by taking milk as raw material and preparation method thereof

A technology of whey protein powder and whey protein, which is applied in the field of milk powder, can solve the problems of affecting the balance of neurotransmitters, whey protein has no biological activity, and the content of aminoacetic acid increases, and achieves low cost, protein activity retention, and protein reduction. The effect of content

Inactive Publication Date: 2010-06-16
INNER MONGOLIA YILI INDUSTRIAL GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to a large amount of threonine in the infant formula added with the above-mentioned whey protein, and high content of threonine can cause an increase in the content of aminoacetic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The production method of the milk powder of the present embodiment mainly comprises the following steps:

[0019] 1. Raw milk (raw milk, raw milk) acceptance inspection, clean milk: It is required that the fat, protein, dry matter, freshness and other indicators meet the quality standards of raw milk, and the mechanical impurities in the raw milk are removed through the clean milk process , and normalize as needed;

[0020] 2. Through the plate heat exchanger, the milk is cooled to below 10°C.

[0021] 3. Carry out ultrafiltration (through 0.1 micron filter membrane) microfiltration and milk soluble phase, wherein the parameters of the microfiltration process are: feed pressure 2.0bar, circulation pressure 3.0bar, dialysis pressure 1.0bar, circulation flow rate 3000l / h. The feed temperature is 6°C, the circulation temperature is 6°C, and the dialysis flow rate is 50 l / h. The parameters of the ultrafiltration process are: feed pressure 1.0 bar, circulation pressure 3....

Embodiment 2

[0042] The parameters of the microfiltration process are: feed pressure 2.5 bar, circulation pressure 6.0 bar, dialysis pressure 5.0 bar, circulation flow rate 6000 l / h, feed temperature 10°C, circulation temperature 10°C, dialysis flow rate 200 l / h. The parameters of the ultrafiltration process are: feed pressure 4.0 bar, circulation pressure 6.0 bar, dialysis pressure 5.0 bar, circulation flow rate 6000 l / h, feed temperature 10°C, circulation temperature 10°C, dialysis flow rate 200 l / h.

[0043] Other steps are the same as in Example 1.

Embodiment 3

[0045] The parameters of the microfiltration process are: feed pressure 2.2 bar, circulation pressure 4.0 bar, dialysis pressure 3.0 bar, circulation flow rate 5000 l / h, feed temperature 810°C, circulation temperature 810°C, dialysis flow rate 150 l / h. The parameters of the ultrafiltration process are: feed pressure 2.5 bar, circulation pressure 4.0 bar, dialysis pressure 4.0 bar, circulation flow rate 4500 l / h, feed temperature 8°C, circulation temperature 8°C, dialysis flow rate 150 l / h.

[0046] Other steps are the same as in Example 1.

[0047] The whey protein powder prepared in Examples 1-3 is compared with the existing WPC / WPI properties as shown in Table 1 below.

[0048] Table 1

[0049] Item comparison

[0050] The comparison of soluble protein and tryptophan content in the product of the present invention and WPC / WPI is shown in Table 2 below.

[0051] Table 2

[0052] Item comparison

[0053] The ratio of tryptophan to long-chain neutral amin...

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PUM

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Abstract

The invention relates to the field of powered milk, in particular relating to whey protein powder by taking milk as a raw material and a preparation method thereof. The method of the invention comprises the following steps: 1) microfiltration: leading milk or reduced milk to pass through a filtration membrane of 0.1mu m; 2) ultrafiltration: leading milk passing through the microfiltration membrane to pass through the ultrafiltration membrane, wherein the interceptor of the filtration membrane is the whey protein; and 3) carrying out concentration, sterilization and spray drying on the whey protein liquid incepted by the filtration membrane to obtain the whey protein powder. In the method of the invention, soluble whey protein is directly extracted from fresh milk through advanced membrane techniques such as low temperature, microfiltration, ultrafiltration and the like, thus maintaining protein activity for the most part, having higher nutrition value, removing lactose, and containing no additives and residual enzyme. The specific value of tryptophane to long-chain neutral amino acid in whey protein powder prepared by the method in the invention is higher than the specific value of ordinary WPC/WPI, as the whey protein in the invention has higher content of alpha-lactoalbumin and does not contain glycomacropeptide.

Description

technical field [0001] The invention relates to the field of milk powder, in particular to a whey protein powder prepared from milk and a preparation method thereof. Background technique [0002] In order to meet the nutritional needs of infants and young children, the closer the essential amino acid content and ratio of infant formula powder to breast milk, the better. Breast milk contains a large amount of tryptophan. Tryptophan and threonine play a role in the growth of infants and young children. The effects are not the same, so the level and ratio of tryptophan and threonine content have a certain impact on the brain development of infants and young children. [0003] Whey protein needs to be added to the raw material of baby milk powder. The existing whey protein production method is to use the remaining whey liquid from processed cheese to produce whey protein, which contains a large amount of glycomacropeptide and lactose. Glycomacropeptide is produced by the action...

Claims

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Application Information

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IPC IPC(8): A23J1/20
Inventor 刘彪温泉
Owner INNER MONGOLIA YILI INDUSTRIAL GROUP CO LTD
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