He then refined it into 34% whey protein concentrate powder and sold it for 50 cents a pound.

FORBES: Making Whey

Other companies are upgrading their facilities to make the 95% whey protein isolate for protein pills and bars.

FORBES: Making Whey

In 1996 bodybuilders started downing whey protein shakes on the theory that ultrafiltered whey would replace damaged muscle tissue.

FORBES: Making Whey

Otten now buys high-protein whey concentrate from cheesemakers, refines it in his plant and extracts different proteins for various customers.

FORBES: Making Whey

It is also important to eat adequate amounts of high quality lean protein like chicken, fish, lean red meat, lowfat dairy or protein supplements like soy or whey, because your body's ability to absorb protein decreases somewhat with age.

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Otten, 53, saw potential in whey's high-quality protein.

FORBES: Making Whey