A better way of measuring protein quality

The Food and Agriculture Organization of the United Nations (FAO) has endorsed a new method of assessing the quality of dietary protein, called Digestible Indispensable Amino Acid Score (DIAAS).
Research Scientist

Page Contents:

The Digestible Indispensable Amino Acid Score (DIAAS) is more scientifically correct than the existing Protein Digestibility Corrected Amino Acid Score (PDCAAS) and demonstrates the true nutritional value of dietary protein sources.
The nutritional quality of protein can now be more accurately measured in dietary sources.
Developed with the help of scientists from New Zealand’s Riddet Institute, it is different from PDCAAS in that it samples from the ileum rather than the faecal matter, measures individual amino acids rather than crude protein, and doesn’t truncate the scores to a maximum of one.
comments powered by Disqus


You have entered a part of our website that contains material and information intended for B2B audiences including customers which are suppliers and distributors of advanced nutrition products and not consumers. If you choose to view this material, you accept that:

  • 1. The information and/or opinions contained in this section are current as of the date of issue and are based on information and facts known to Fonterra Co-operative Group Limited, its subsidiaries and affiliates (collectively, “Fonterra”) on such date of issue.
  • 2. The information and/or opinions contained in this document do not necessarily reflect Fonterra’s opinion and may be changed at any time without notice. Fonterra does not assume any obligation to review or update such information and/or opinions.
  • 3. Fonterra and its agents, suppliers and distributors make no representations or warranties of any kind with respect to the information and/or opinions contained in this section including, but not limited to, any representation or warranty as to the accuracy, adequacy or completeness of such information and/or opinions or that such information and/or opinions are suitable for your intended use or that such information/opinions meet any relevant regulatory requirements.
  • 4. This part of our website mentions paediatric nutrition and paediatric ingredients, and has been specifically developed for our manufacturing customers, scientists and health care professionals. You accept that any information provided in respect of paediatric nutrition and infant formula is being provided for informational purposes only.
  • 5. Fonterra supports the aim and intent of the World Health Organisation International Code for the Marketing of Breast Milk Substitutes and as such we feel it is important to point out the following:

    Breast milk is the normal way to feed a baby and is important for baby's health. Professional advice should be sought before using an infant formula. Introducing partial bottle feeding may negatively affect breast feeding. Good maternal nutrition is important during breast feeding and reversing a decision not to breast feed may be difficult. Infant formula should only be used as directed and improper use may negatively impact the health of the infant. Social and financial implications should be considered when selecting a method of feeding.