Journal
LWT-FOOD SCIENCE AND TECHNOLOGY
Volume 61, Issue 1, Pages 7-11Publisher
ELSEVIER
DOI: 10.1016/j.lwt.2014.11.038
Keywords
Essential amino acid; Amino acid score; Protein digestibility-corrected amino acid score; Protein quality
Categories
Funding
- Fundacao de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ, Brasil) [E-26/103.003/2012]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq, Brasil) [311361/2013-7]
- CNPq
Ask authors/readers for more resources
Amongst the sport dietary supplements, those manufactured with whey protein (WP) represent an important amino acid source. However, as a result of product lack of uniformity, the nutritional quality of this type of product is uncertain. Thus, the aim of this study was to investigate the protein quality of WP supplements produced by U.S. (WP-USA), and Brazilian companies (WP-BRA), evaluating the in vitro protein digestibility, and the essential amino acid (EEA) composition. In addition, the amino acid (AAS) and protein digestibility-corrected amino acid (PDCAAS) scores were calculated. Although WP-USA supplement exhibited greater (P < 0.05) digestibility than WP-BRA counterparts, both WP supplements exhibited greater (P < 0.05) digestibility than soy and caseinate isolate supplements, which were used as reference. Considering the WHO/FAO/UNU protein standard for non-athletic adult, the WP-USA and WP-BRA supplements scored high AAS. In addition, the PDCAAS values on both supplement groups were >1.0, with exception of threonine and valine in WP-USA, and isoleucine and leucine in WP-BRA. However, when the calculated AAS and PDCAAS based on the suggestion for adult athletes were considered, both supplements exhibited suboptimal score values for several EAA. In addition, both WP-USA and WP-BRA supplements were unable to supply the suggested adult athlete EAA requirement. (C) 2014 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available