Absorption and Urinary Excretion of Peptides after Collagen Tripeptide Ingestion in Humans.

@article{Yamamoto2016AbsorptionAU,
  title={Absorption and Urinary Excretion of Peptides after Collagen Tripeptide Ingestion in Humans.},
  author={Shoko Yamamoto and Kisaburo Deguchi and Masamichi Onuma and Noriaki Numata and Yasuo Sakai},
  journal={Biological \& pharmaceutical bulletin},
  year={2016},
  volume={39 3},
  pages={
          428-34
        }
}
Collagen tripeptide (CTP) is a collagen hydrolysate containing a high concentration of tripeptides with a Gly-X-Y sequence, such as Gly-Pro-Hyp. To test the effects of this preparation, we compared the absorption of peptides in humans after ingestion of a tripeptide fraction of CTP (CTP-100), a CTP preparation containing ca. 50% Gly-X-Y tripeptides (CTP-50), and a collagen peptide that did not contain tripeptides (CP). The postprandial levels of Gly-Pro-Hyp and Pro-Hyp in the plasma increased… 
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