| In a nutshell its to do with enzymes present during manufacturing to obtain the whey. Those companies that list a time (like 45 mins) have obviously obtained cheap over-processed whey protein, as they are worried that anything over 45 mins wait will hydrolyse the proteins beyond use (hydrolysis does denature ie. breakdown) and therefore lose all biological activity.
Good quality NZ whey wont denature overnight, and certainly not in 45 mins.
In fact, its probably best for BB'ers to mix up their morning whey shake (assuming a good source) before bed and get up half way through sleep to neck half of it, as the hydrolysation is preferable for faster absorption (smaller protein chains)
But dont put L-Glutamine in there though until the last minute possible (if you use it). The half-life in liquid is very short.
Heat and pH changes denature protein, which is inevitable in the processing of the whey to kill bacteria before filtration. The source of the whey is all important when determining protein fractions and quality etc in the end product (your shake) If you dont know the source of the whey, dont buy it. |