Validating the use of bulk tissue stable isotope and amino acid δ15N values measured in molted hair and epidermis of elephant seals to assess temporal foraging niche specialization

2021 ◽  
Author(s):  
N Lübcker ◽  
SD Newsome ◽  
MN Bester ◽  
PJN de Bruyn
Keyword(s):  
Amino Acid ◽  
Stable Isotope ◽  
Elephant Seals ◽  
Niche Specialization ◽  
Foraging Niche ◽  
Bulk Tissue

scholarly journals Bulk tissue and amino acid stable isotope analyses reveal global ontogenetic patterns in ocean sunfish trophic ecology and habitat use

2020 ◽  
Vol 633 ◽  
pp. 127-140 ◽  
Author(s):  
ND Phillips ◽  
EA Elliott Smith ◽  
SD Newsome ◽  
JDR Houghton ◽  
CD Carson ◽  
...  
Keyword(s):  
Amino Acid ◽  
Stable Isotope ◽  
Habitat Use ◽  
Trophic Ecology ◽  
Stable Isotope Analyses ◽  
Ocean Sunfish ◽  
Acid Stable ◽  
Bulk Tissue ◽  
Isotope Analyses

Land‐use change erodes trophic redundancy in tropical forest streams: evidence from amino acid stable isotope analysis

2021 ◽  
Author(s):  
Kenny W.J. Chua ◽  
Jia Huan Liew ◽  
Clare L. Wilkinson ◽  
Amirrudin B. Ahmad ◽  
Heok Hui Tan ◽  
...  
Keyword(s):  
Land Use ◽  
Amino Acid ◽  
Stable Isotope ◽  
Land Use Change ◽  
Tropical Forest ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Forest Streams ◽  
Acid Stable

scholarly journals Comprehensive assessment of post-prandial protein handling by the application of intrinsically labelled protein in vivo in human subjects

2021 ◽  
pp. 1-9
Author(s):  
Jorn Trommelen ◽  
Andrew M. Holwerda ◽  
Philippe J. M. Pinckaers ◽  
Luc J. C. van Loon
Keyword(s):  
Protein Synthesis ◽  
Amino Acid ◽  
Stable Isotope ◽  
Dietary Protein ◽  
Protein Metabolism ◽  
Muscle Protein ◽  
Human Subjects ◽  
Whole Body ◽  
Body Protein

All human tissues are in a constant state of remodelling, regulated by the balance between tissue protein synthesis and breakdown rates. It has been well-established that protein ingestion stimulates skeletal muscle and whole-body protein synthesis. Stable isotope-labelled amino acid methodologies are commonly applied to assess the various aspects of protein metabolism in vivo in human subjects. However, to achieve a more comprehensive assessment of post-prandial protein handling in vivo in human subjects, intravenous stable isotope-labelled amino acid infusions can be combined with the ingestion of intrinsically labelled protein and the collection of blood and muscle tissue samples. The combined application of ingesting intrinsically labelled protein with continuous intravenous stable isotope-labelled amino acid infusion allows the simultaneous assessment of protein digestion and amino acid absorption kinetics (e.g. release of dietary protein-derived amino acids into the circulation), whole-body protein metabolism (whole-body protein synthesis, breakdown and oxidation rates and net protein balance) and skeletal muscle metabolism (muscle protein fractional synthesis rates and dietary protein-derived amino acid incorporation into muscle protein). The purpose of this review is to provide an overview of the various aspects of post-prandial protein handling and metabolism with a focus on insights obtained from studies that have applied intrinsically labelled protein under a variety of conditions in different populations.

Characterization of the Geographical Origin of Pecorino Sardo Cheese by Casein Stable Isotope (13C/12C and15N/14N) Ratios and Free Amino Acid Ratios

2001 ◽  
Vol 49 (3) ◽  
pp. 1404-1409 ◽  
Author(s):  
Gavina Manca ◽  
Federica Camin ◽  
Gavina C. Coloru ◽  
Alessandra Del Caro ◽  
Daniela Depentori ◽  
...  
Keyword(s):  
Amino Acid ◽  
Stable Isotope ◽  
Free Amino Acid ◽  
Free Amino ◽  
Geographical Origin
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