Will heating whey protein change its effectiveness?

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    Jul 01, 2010 3:38 PM GMT
    My friend just asked me an interesting question. She was wondering if she could cook whey protein powder into her oatmeal, or if heating it would change the properties somehow. I have never thought to do this and the brand I use doesn't say anything about heating it. Wondering if anybody has any experience or thoughts with using protein powder in hot liquids or foods.
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    Jul 02, 2010 12:42 PM GMT
    I do not think that heating a protein would significantly decrease it's nutritional value. Heating is one way of denaturing a protein. When a protein is denatured, its secondary and tertiary structure is altered. When a protein is denatured, it loses solubility. The best example is the raw egg. It becomes solid when heated. Whey protein will become stiff when heated. The amino acids (primary structure) are still present, but their shape (secondary and tertiary structure) is altered. If you heat 30gms of protein, you still have 30 gms of protein after the heating process is over. Denaturing protein can increase the digestibility of the protein. The original (unheated) structure of the protein may be more resistant to enzymatic digestion by the GI tract. The heated protein is more readily digested. Of course if you overheat and burn the protein, the amino acids (primary structure) will be destroyed with loss of nutritional value.

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    Jul 02, 2010 1:46 PM GMT
    Makes sense, thank you. I think she's just talking about pouring water on it vs. cooking it on the stove so hopefully it will not be affected. I'm not sure it's gonna taste that good, but she'll find that out soon enough LOL.
  • mybud

    Posts: 11819

    Jul 04, 2010 1:13 AM GMT
    Heating it has minimal effect on the whey dude....BUD