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How can I assess the quality of a protein?

Michael T. Murray, ND
Naturopathic Medicine

To assess the quality of a protein, scientists measure the proportion of the amino acids that are absorbed, retained, and used in the body to determine the protein's biological value (BV). The food source that has the highest biological value protein is whey protein. Whey is a natural by-product of the cheese-making process. Cow's milk has about 6.25 percent protein. Of that protein, 80 percent is casein (another type of protein), leaving the whey behind.

Eggs contain the second highest quality food protein known. Some people consider the egg to be a nearly perfect food. In fact, egg protein is often the standard by which all other proteins are judged.

Encyclopedia of Healing Foods

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Encyclopedia of Healing Foods

From the bestselling authors of The Encyclopedia of Natural Medicine, the most comprehensive and practical guide available to the nutritional benefits and medicinal properties of virtually everything...

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.