The report of the expert meeting held by the FAO on 2-5 March 2014 in Bangalore, India to develop protocols to provide a more robust data set of the true ileal AA digestibility of human foods; this includes more data on true ileal amino acid digestibility and more inter-species comparisons of true ileal AA digestibility, is now available. In the report, the true ileal AA digestibility assay, as commonly used in feed composition tables for pigs, is recommended to assess protein quality of human foods.
As a follow up of the Expert Consultation on dietary protein quality evaluation in human nutrition in Auckland, New Zealand, the FAO assembled a working group to develop research protocols that would allow the measurement of true ileal digestibility values across animal models (pig and rat) and human studies using protein sources that are representative of those consumed by human populations. This expert meeting was held on 2-5 March 2014 in Bangalore, India. The report was recently released and provides protocols to assess true ileal amino acid digestibility. The committee provided a detailed description of the ideal method for measuring protein digestibility of human food and detailed descriptions of 5 protocols. Among these are the true ileal digestibility of amino acids using the pigs and rat, the indicator oxidation method, (net) post-prandial protein utilisation and dual tracer approach. The report is entitled “Research approaches and methods for evaluating the protein quality of human foods” and can be downloaded via this link.