K. A. GREAVES (1)
(1) Kellogg Company, Battle Creek, MI, U.S.A.
2012 AACCI Annual Meeting
http://dx.doi.org/10.1094/CPLEX-2012-1108-02W
Protein as a macronutrient can be provided from many dietary sources, including animal and vegetable. The need for dietary protein and for many of the specific amino acids that comprise protein has been clearly demonstrated. With the amino acid composition of the protein being quite variable among protein sources, protein quality is an essential element to meeting human needs. It is generally recognized that a majority of vegetable proteins do not contain an appropriate amount or ratio of amino acids to meet human requirements, while proteins from animal sources generally are sufficient to meet human protein requirements. Combining of complementary proteins or the addition of amino acid mixtures may improve the quality of these grain-based proteins. Protein quality is important for tissue growth and maintenance, with human requirements including both nitrogen and amino acid components. The amino acid requirements are dependent on content of essential amino acids, digestibility of the protein and metabolism of absorbed amino acids. Methods for evaluating protein quality have evolved over time although controversy still exists in selecting the appropriate method for use in protein evaluation for human needs. The purpose of this presentation is to give an introduction to the methodology used to evaluate protein quality and to briefly discuss the potential health benefits.
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2012 AACCI Protein Quality: Methodology and Benefits in Grain-based Foods
