BIOMAT Database Logo BIOMAT Database Logo

Protein digestibility-corrected amino acid scores (PDCAAS) for soy protein isolates and concentrate: criteria for evaluation. 2011

Glenna J Hughes, and David J Ryan, and Ratna Mukherjea, and Charles S Schasteen
Solae, LLC, 4300 Duncan Avenue, St. Louis, Missouri 63110, United States. ghughes@solae.com

Protein quality, as determined by the PDCAAS method, is a measure of a protein's ability to provide adequate levels of essential amino acids for human needs. PDCAAS is calculated using an amino acid profile and true digestibility of a food protein. Soy protein is recognized as a high quality plant protein, but published PDCAAS values may vary based on the soy protein ingredient as well as the reproducibility and accuracy of the testing methods. Comparison of PDCAAS values for four differently processed soy ingredients, including three isolated soy proteins (ISP) and one soy protein concentrate (SPC), was made using two different laboratories with evaluation of the impact of the reproducibility and accuracy of amino acid profiles. PDCAAS calculations, using amino acid values from one laboratory, yielded a truncated PDCAAS of 1.00 for all four ingredients, while a second laboratory provided statistically significantly lower scores (0.95-1.00). We conclude that analytical method error can be a significant contributor to PDCAAS differences and can be mitigated by the application of amino acid nitrogen recovery correction factors.

UI MeSH Term Description Entries
D009753 Nutritive Value An indication of the contribution of a food to the nutrient content of the diet. This value depends on the quantity of a food which is digested and absorbed and the amounts of the essential nutrients (protein, fat, carbohydrate, minerals, vitamins) which it contains. This value can be affected by soil and growing conditions, handling and storage, and processing. Biological Availability, Nutritional,Nutritional Availability,Availability, Biological Nutritional,Availability, Nutritional Biologic,Biologic Availability, Nutritional,Biologic Nutritional Availability,Nutrition Value,Nutritional Availability, Biologic,Nutritional Availability, Biological,Nutritional Biological Availability,Nutritional Food Quality,Nutritional Quality,Nutritional Value,Nutritive Quality,Availability, Biologic Nutritional,Availability, Nutritional,Availability, Nutritional Biological,Biological Nutritional Availability,Food Quality, Nutritional,Nutrition Values,Nutritional Biologic Availability,Nutritional Values,Nutritive Values,Quality, Nutritional,Quality, Nutritional Food,Quality, Nutritive,Value, Nutrition,Value, Nutritional,Value, Nutritive,Values, Nutrition,Values, Nutritional,Values, Nutritive
D012016 Reference Values The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality. Normal Range,Normal Values,Reference Ranges,Normal Ranges,Normal Value,Range, Normal,Range, Reference,Ranges, Normal,Ranges, Reference,Reference Range,Reference Value,Value, Normal,Value, Reference,Values, Normal,Values, Reference
D002675 Child, Preschool A child between the ages of 2 and 5. Children, Preschool,Preschool Child,Preschool Children
D004044 Dietary Proteins Proteins obtained from foods. They are the main source of the ESSENTIAL AMINO ACIDS. Proteins, Dietary,Dietary Protein,Protein, Dietary
D004063 Digestion The process of breakdown of food for metabolism and use by the body.
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000596 Amino Acids Organic compounds that generally contain an amino (-NH2) and a carboxyl (-COOH) group. Twenty alpha-amino acids are the subunits which are polymerized to form proteins. Amino Acid,Acid, Amino,Acids, Amino
D000601 Amino Acids, Essential Amino acids that are not synthesized by the human body in amounts sufficient to carry out physiological functions. They are obtained from dietary foodstuffs. Essential Amino Acid,Essential Amino Acids,Acid, Essential Amino,Acids, Essential Amino,Amino Acid, Essential
D030262 Soybean Proteins Proteins which are present in or isolated from SOYBEANS. Dietary Soybean Protein,Soy Bean Protein,Soybean Protein,Dietary Soybean Proteins,Soy Bean Proteins,Soy Protein,Soy Proteins,Bean Protein, Soy,Protein, Dietary Soybean,Protein, Soy,Protein, Soy Bean,Protein, Soybean,Proteins, Dietary Soybean,Proteins, Soy,Soybean Protein, Dietary,Soybean Proteins, Dietary

Related Publications

Glenna J Hughes, and David J Ryan, and Ratna Mukherjea, and Charles S Schasteen
Digestible indispensable amino acid score (DIAAS) and protein digestibility corrected amino acid score (PDCAAS) in oat protein concentrate measured in 20- to 30-kilogram pigs.
January 2018, Journal of the science of food and agriculture,
Glenna J Hughes, and David J Ryan, and Ratna Mukherjea, and Charles S Schasteen
Values for digestible indispensable amino acid scores (DIAAS) for some dairy and plant proteins may better describe protein quality than values calculated using the concept for protein digestibility-corrected amino acid scores (PDCAAS).
February 2017, The British journal of nutrition,
Glenna J Hughes, and David J Ryan, and Ratna Mukherjea, and Charles S Schasteen
In vitro versus in vivo protein digestibility techniques for calculating PDCAAS (protein digestibility-corrected amino acid score) applied to chickpea fractions.
November 2016, Food research international (Ottawa, Ont.),
Glenna J Hughes, and David J Ryan, and Ratna Mukherjea, and Charles S Schasteen
Protein digestibility using corrected amino acid score method (PDCAAS) of four types of mushrooms grown in Jordan.
January 2002, Plant foods for human nutrition (Dordrecht, Netherlands),
Glenna J Hughes, and David J Ryan, and Ratna Mukherjea, and Charles S Schasteen
White clover fractions as protein source for monogastrics: dry matter digestibility and protein digestibility-corrected amino acid scores.
May 2018, Journal of the science of food and agriculture,
Glenna J Hughes, and David J Ryan, and Ratna Mukherjea, and Charles S Schasteen
Protein digestibility-corrected amino acid scores and digestible indispensable amino acid scores differentially describe protein quality in growing male rats.
February 2015, The Journal of nutrition,
Glenna J Hughes, and David J Ryan, and Ratna Mukherjea, and Charles S Schasteen
The Protein Digestibility-Corrected Amino Acid Score (PDCAAS)--a concept for describing protein quality in foods and food ingredients: a critical review.
January 2005, Journal of AOAC International,
Glenna J Hughes, and David J Ryan, and Ratna Mukherjea, and Charles S Schasteen
Advantages and limitations of the protein digestibility-corrected amino acid score (PDCAAS) as a method for evaluating protein quality in human diets.
August 2012, The British journal of nutrition,
Glenna J Hughes, and David J Ryan, and Ratna Mukherjea, and Charles S Schasteen
Protein digestibility-corrected amino acid scores for bean and bean-rice infant weaning food products.
October 2001, Journal of agricultural and food chemistry,
Glenna J Hughes, and David J Ryan, and Ratna Mukherjea, and Charles S Schasteen
The protein digestibility-corrected amino acid score.
July 2000, The Journal of nutrition,
Copied contents to your clipboard!