Cited by 167Muscle metabolism and nutritionNutrition and Health in AgingAnimal Nutrition and Physiology

Minced beef is more rapidly digested and absorbed than beef steak, resulting in greater postprandial protein retention in older men

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Pennings, Bart, Groen, Bart BL, van Dijk, Jan-Willem, de Lange, Anneke, Kiskini, Alexandra, Kuklinski, Marjan, Senden, Joan MG, van Loon, Luc JC·2013·The American Journal of Clinical Nutrition

Abstract

Background Older individuals generally experience a reduced food-chewing efficiency. As a consequence, food texture may represent an important factor that modulates dietary protein digestion and absorption kinetics and the subsequent postprandial protein balance.Objective We assessed the effect of meat texture on the dietary protein digestion rate, amino acid availability, and subsequent postprandial protein balance in vivo in older men.Design Ten older men (mean ± SEM age: 74 ± 2 y) were randomly assigned to a crossover experiment that involved 2 treatments in which they consumed 135 g of specifically produced intrinsically L-[1-(13)C]phenylalanine-labeled beef, which was provided as beef steak or minced beef. Meat consumption was combined with continuous intravenous L-[ring-(2)H5]phenylalanine and L-[ring-(2)H2]tyrosine infusion to assess beef protein digestion and absorption kinetics as well as whole-body protein balance and skeletal muscle protein synthesis rates.Results Meat protein-derived phenylalanine appeared more rapidly in the circulation after minced beef than after beef steak consumption (P < 0.05). Also, its availability in the circulation during the 6-h postprandial period was greater after minced beef than after beef steak consumption (61 ± 3% compared with 49 ± 3%, respectively; P < 0.01). The whole-body protein balance was more positive after minced beef than after beef steak consumption (29 ± 2 compared with 19 ± 3 μmol phenylalanine/kg, respectively; P < 0.01). Skeletal muscle protein synthesis rates did not differ between treatments when assessed over a 6-h postprandial period.Conclusions Minced beef is more rapidly digested and absorbed than beef steak, which results in increased amino acid availability and greater postprandial protein retention. However, this does not result in greater postprandial muscle protein synthesis rates. This trial was registered at clinicaltrials.gov as NCT01145131.

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Crossref · 10.3945/ajcn.112.051201

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  • Approximately 61% and 49% availability of amino acids from minced beef and beef steak over a 6-hour postprandial period, respectively.

    “Furthermore, Pennings et al. [73] observed ∼61% and ∼49% availability of amino acids from minced beef and beef steak over a 6-h postprandial period, respectively.”

    From Nutritional Considerations for the Vegan Athlete (2023) · cites this paper as [73]

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Authors
Pennings, B., Groen, B. B., van Dijk, J.-W., de Lange, A., Kiskini, A., Kuklinski, M., Senden, J. M., & van Loon, L. J.
Venue
The American Journal of Clinical Nutrition
Publisher
Elsevier BV
Published
2013-07
Volume
98
Issue
1
Pages
121-128
ISSN
0002-9165 (ISSN-L)
OpenAlex
W2138339477
Cited by
167
References
38
Citations by year
2026: 8 · 2025: 11 · 2024: 7 · 2023: 13 · 2022: 16 · 2021: 15 · 2020: 16 · 2019: 18 · 2018: 14 · 2017: 14 · 2016: 12 · 2015: 14 · 2014: 9
FWCI
6.77
Type
journal article
Language
en
Open access
Locations
  • American Journal of Clinical Nutrition (publishedVersion)
  • PubMed (publishedVersion)
  • Research Publications (Maastricht University) (publishedVersion, other-oa)
  • Research Bank (Australian Catholic University) (submittedVersion)
  • Research Publications (Maastricht University) (submittedVersion, other-oa)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Nutrition and Physiology
Keywords
ground beef, beef steaks, meat texture, protein digestion, protein absorption, amino acid availability, phenylalanine, tyrosine, skeletal muscle protein synthesis, older men, aging, masticatory efficiency
MeSH terms
Aged, Animals, Biological Availability, Blood Glucose, Carbon Isotopes, Cattle, Dietary Proteins, Digestion, Humans, Male, Meat, Muscle Proteins, Phenylalanine, Surveys and Questionnaires, Tyrosine, Muscle, Skeletal, Cross-Over Studies, Postprandial Period

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