Protein efficiency ratio
Oxford Food & Fitness Dictionary:
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protein efficiency ratio
PER
A biological assay of the quality of a particular protein, measured as the gain in weight of an animal per gram of the protein eaten. The ratio is not used so much now, but until 1991 the PER was the legally required way of expressing protein quality for nutrition labelling in the USA.
Wiley Dictionary of Flavors:
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PER (protein efficiency ratio)
PER is the measurement of the body's biological absorption of a protein from native protein (in a food product) to usable protein. Included in milk protein are casein and the protein in whey (provided commercially as whey protein concentrate). They have the highest PER at 3.2, indicating that the body most easily absorbs them. For this reason, whey proteins make excellent sources for protein for infant foods, and amino acid supplements. Whey protein concentrate (WPC) is mainly beta lactalglobulin and alpha lactalbumin along with immunoglobulins. WPC can absorb water, bind, and gel. For this reason, WPC is used in surimi. See Nutrition.
Mosby's Dental Dictionary:
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protein efficiency ratio
n
PER
A calculation designed to assess an individual protein’s ability to sustain growth.
Wikipedia on Answers.com:
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Protein efficiency ratio
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Protein efficiency ratio (PER) is based on the weight gain of a test subject divided by its intake of a particular food protein during the test period.
From 1919 until very recently, the PER had been a widely used method for evaluating the quality of protein in food.
In the United States, the food industry had long used the PER as the standard for evaluating the protein quality of food proteins. The U.S. Food and Drug Administration used the PER as the basis for the percent of the U.S. recommended daily allowance (USRDA) for protein shown on food labels.
See also
- Protein Digestibility Corrected Amino Acid Score (PDCAAS)
- Net protein utilization
- Nitrogen balance
- Protein digestibility
- Protein : Amino Acids
- Whey protein
- Soy protein
- Casein
- Biological value
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Oxford Food & Nutrition Dictionary
A Dictionary of Food and Nutrition. Copyright © 1995, 2003, 2005 by A. E. Bender and D. A. Bender. All rights reserved.
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Oxford Food & Fitness Dictionary
Food and Fitness: A Dictionary of Diet and Exercise. Copyright © 1997, 2003 by Oxford University Press. All rights reserved.
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Wiley Dictionary of Flavors
Copyright © 2008 by Wiley-Blackwell. Wiley and the Wiley logo are registered trademarks of John Wiley & Sons, Inc. and/or its affiliates in the United States and other countries. Used here by license. Read more
Mosby's Dental Dictionary
Mosby's Dental Dictionary. Copyright © 2004 by Elsevier, Inc. All rights reserved.
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