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How whey protein is made ?


 

In the last blog, we saw that what is whey. we will see in this blog How is it used as a supplement and in what ways is it made?

Over time, as people have seen how many benefits it has, by the way we have started to feed animals only as fodder or in addition to rivers, we drink ourselves and its usage has increased. The liquid that comes out while preparing cheese is called cheese whey and the whey made from direct milk is called native whey. Most companies use cheese whey because it is cheaper than the native whey and only a few companies use the native, And that company also says that its benefits are more, but some big differences have not been seen But that company also tells that there is a high amount of leucine in it. 

How whey is extracted from milk ?

Whey protein is a dairy product and is obtained from cow’s milk.In its raw state, milk contains about 5% lactose, 4% fat and 3.5% protein. In the cheese processing facility, the milk goes through a process called pasteurization. Pasteurization is the process devised by Louis Pasteur. Pasteurization ensures that there are no bacteria breeding in the milk. Milk, if not treated, contains some harmful bacteria that can be fatal to human health. During pasteurization, Milk is boiled until its boiling point (70-80 ° C) and then instantly cooled at 4° C. Scientists have proven that bacteria don’t survive when subjected to extreme temperatures. Pasteurization ensures that the milk is free of harmful bacteria.

Post-pasteurization, the milk obtained has 20 % whey and 80 % casein.The pasteurized milk is subjected to enzymes to separate the whey from casein. Casein is the dominant product in milk. On the application of enzymes, milk gets separated into two parts – liquid and solid particles. The solid particles are collected and are processed as cheese. The liquid part is the one which contains whey as well as fats and carbs. The liquid whey is sent for further purification to remove fats, carbohydrates, water and minerals. 

Micro filtration

Liquid whey is sent to be filtered to high-protein liquid whey. During this step, whey goes through further purification to remove fats, carbohydrates and water. In a protein manufacturing plant, liquid whey is filtered through an array of ceramic micro-filters. This process happens in a cold environment and is completely natural. This process removes most fat and lactose from the liquid whey. The resulting product is the base of whey protein concentrate.

Ultra-filtration (for WPI only)

Whey concentrate is ultra-filtered to make whey protein isolate. Working by size exclusion, the ultra-filtration membrane lets the lactose-rich solution go though but retains the larger whey complex. At this stage, virtually all fat and lactose are removed.

The unflavoured whey protein powder is then tested for quality. The amount of protein is strictly measured. The final product contains 80 to 90% protein. The plain whey protein powder is packaged and transferred to the last facility, where it gets blended with other ingredients for flavours.

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