International Journal of Food Science and Nutrition

International Journal of Food Science and Nutrition


International Journal of Food Science and Nutrition
International Journal of Food Science and Nutrition
Vol. 7, Issue 1 (2022)

Protein quality assessment: Impact of expanding understanding of protein and amino acid needs for optimal health


Singh Itisha, Paul Virginia, Afreen Sana

Protein quality describes characteristics of a protein in relation to its ability to achieve defined metabolic actions. Traditionally, this has been discussed solely in the context of a protein's ability to provide specific patterns of amino acids to satisfy the demands for synthesis of protein as measured by animal growth or, in humans, nitrogen balance. As understanding of protein's actions expands beyond its role in maintaining body protein mass, the concept of protein quality must expand to incorporate these newly emerging actions of protein into the protein quality concept. New research reveals increasingly complex roles for protein and amino acids in regulation of body composition and bone health, gastrointestinal function and bacterial flora, glucose homeostasis, cell signaling, and satiety. The evidence available to date suggests that quality is important not only at the minimum Recommended Dietary Allowance level but also at higher intakes. Currently accepted methods for measuring protein quality do not consider the diverse roles of indispensable amino acids beyond the first limiting amino acid for growth or nitrogen balance. As research continues to evolve in assessing protein's role in optimal health at higher intakes, there is also need to continue to explore implications for protein quality assessment. Topic
  • amino acids
  • satiation
  • nitrogen balance
  • glucose homeostasis
  • healthcare quality assessment
Issue Section Supplement: Protein Summit 2007: Exploring the Impact of High-Quality Protein on Optimal Health
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How to cite this article:
Singh Itisha, Paul Virginia, Afreen Sana. Protein quality assessment: Impact of expanding understanding of protein and amino acid needs for optimal health. International Journal of Food Science and Nutrition, Volume 7, Issue 1, 2022, Pages 1-5
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