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Seed Composition and Amino Acid Profiles for Quinoa Grown in Washington State

Quinoa (Chenopodium quinoa Willd.) is a pseudocereal celebrated for its excellent nutritional quality and potential to improve global food security, especially in marginal environments. However, minimal information is available on how genotype influences seed composition, and thus, nutritional quali...

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Autores principales: Craine, Evan B., Murphy, Kevin M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7434868/
https://www.ncbi.nlm.nih.gov/pubmed/32903386
http://dx.doi.org/10.3389/fnut.2020.00126
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author Craine, Evan B.
Murphy, Kevin M.
author_facet Craine, Evan B.
Murphy, Kevin M.
author_sort Craine, Evan B.
collection PubMed
description Quinoa (Chenopodium quinoa Willd.) is a pseudocereal celebrated for its excellent nutritional quality and potential to improve global food security, especially in marginal environments. However, minimal information is available on how genotype influences seed composition, and thus, nutritional quality. This study aimed to provide a baseline for nutritional quality of Washington grown quinoa and test the hypothesis that these samples contain adequate amounts of essential amino acids to meet daily requirements set by the World Health Organization (WHO). One hundred samples, representing commercial varieties and advanced breeding lines adapted to Washington State, were analyzed for content of 23 amino acids, as well as crude protein, ash, moisture, and crude fat. Mean essential amino acid values for Washington grown quinoa met the daily requirements for all age groups for all essential amino acids, except for the amount of leucine required by infants. We found that only nine genotypes met the leucine requirements for all age groups. A total of 52 and 94 samples met the lysine and tryptophan requirements for all age groups, respectively. Mean values for isoleucine, leucine, lysine, tryptophan, valine, and the sulfur and aromatic amino acids are higher for Washington grown samples than those reported previously reported in the literature. Our results show that not all Washington grown quinoa samples meet daily requirements of essential amino acids, and we identify limiting amino acids for the germplasm and environments investigated. This study provides the first report of leucine as a limiting amino acid in quinoa. Additional research is needed to better understand variation in quinoa nutritional composition, identify varieties that meet daily requirements, and explore how genotype, environment, and management interactions influence nutritional quality.
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spelling pubmed-74348682020-09-03 Seed Composition and Amino Acid Profiles for Quinoa Grown in Washington State Craine, Evan B. Murphy, Kevin M. Front Nutr Nutrition Quinoa (Chenopodium quinoa Willd.) is a pseudocereal celebrated for its excellent nutritional quality and potential to improve global food security, especially in marginal environments. However, minimal information is available on how genotype influences seed composition, and thus, nutritional quality. This study aimed to provide a baseline for nutritional quality of Washington grown quinoa and test the hypothesis that these samples contain adequate amounts of essential amino acids to meet daily requirements set by the World Health Organization (WHO). One hundred samples, representing commercial varieties and advanced breeding lines adapted to Washington State, were analyzed for content of 23 amino acids, as well as crude protein, ash, moisture, and crude fat. Mean essential amino acid values for Washington grown quinoa met the daily requirements for all age groups for all essential amino acids, except for the amount of leucine required by infants. We found that only nine genotypes met the leucine requirements for all age groups. A total of 52 and 94 samples met the lysine and tryptophan requirements for all age groups, respectively. Mean values for isoleucine, leucine, lysine, tryptophan, valine, and the sulfur and aromatic amino acids are higher for Washington grown samples than those reported previously reported in the literature. Our results show that not all Washington grown quinoa samples meet daily requirements of essential amino acids, and we identify limiting amino acids for the germplasm and environments investigated. This study provides the first report of leucine as a limiting amino acid in quinoa. Additional research is needed to better understand variation in quinoa nutritional composition, identify varieties that meet daily requirements, and explore how genotype, environment, and management interactions influence nutritional quality. Frontiers Media S.A. 2020-08-12 /pmc/articles/PMC7434868/ /pubmed/32903386 http://dx.doi.org/10.3389/fnut.2020.00126 Text en Copyright © 2020 Craine and Murphy. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Nutrition
Craine, Evan B.
Murphy, Kevin M.
Seed Composition and Amino Acid Profiles for Quinoa Grown in Washington State
title Seed Composition and Amino Acid Profiles for Quinoa Grown in Washington State
title_full Seed Composition and Amino Acid Profiles for Quinoa Grown in Washington State
title_fullStr Seed Composition and Amino Acid Profiles for Quinoa Grown in Washington State
title_full_unstemmed Seed Composition and Amino Acid Profiles for Quinoa Grown in Washington State
title_short Seed Composition and Amino Acid Profiles for Quinoa Grown in Washington State
title_sort seed composition and amino acid profiles for quinoa grown in washington state
topic Nutrition
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7434868/
https://www.ncbi.nlm.nih.gov/pubmed/32903386
http://dx.doi.org/10.3389/fnut.2020.00126
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