Cereal proteins in the human diet: Reflecting on their contributions to daily protein intake

Abstract

While not considered a protein food, cereal grains represent the primary source of plant-derived protein within dietary patterns across regions. The objective of this review was to discuss the value of cereal grains as a contributor of dietary protein to diets. High amounts of global production, as well as their ubiquitousness within the food supply, has positioned cereals as an important contributor to protein and indispensable amino acids (IDAA) intakes for human diets. As global pressures promote enhanced use of plant protein in dietary patterns for health and environmental sustainability, cereal grains can provide complementary IDAA to other plant proteins (legumes, nuts, and seeds) and thereby improve the overall biological value of protein in diets. Furthermore, regional diets, food security, and context around use of whole grains also require consideration when cereals are contributing to significant levels dietary protein and IDAA. It is likely that cereal grains will remain as a prominent and important nutrient dense dietary staple for the provision of complementary IDAA.