Answer: because they are stripped of nutrients during the milling process
I’m not a 100% sure if that’s right or not I looked it up and it mentions nutrients being removed so I’m gonna out on a limb and say that one may be right! Please let me know if it helped!
Proteins are the nutritional class which builds and maintains cells and tissues. The type are often called "structural" since they are like the scaffolding of cells and tissues.
