Biological Value (BV) is a common term used with protein, but not many people know what it means or why it is important.
Biological Value is one of the standards of measure for over-all protein quality. It measures the amount of protein deposited in to the muscle tissue per gram of protein absorbed from foods and supplements. However, not every gram of protein you intake is absorbed by the body. If there is not 100% biological value then your body can not use that source alone or fully to provide your muscles with the full grams of protein available. For example, tuna has a BV of 83% that means that 17% of the protein digested is not able to be processed because it is missing key protein particles (amino acids).
Biological Value for top proteins:
Whey Isolate: 159
Whey Concentrate: 104
Whole Egg: 100
Egg Whites: 88
Lean Beef: 80
Chicken Breast: 79