Porcine skin collagen hydrolysate maintained ACE inhibitory activity after simulated digestion, and its peptide fractions showed antiobesogenic effects, suggesting food-derived peptides can survive the gut to provide health benefits.
Survives digestionCollagen-derived peptides maintained blood pressure-lowering activity after simulated stomach and intestinal digestion
What the researchers found
PSCH maintained ACE inhibitory activity after simulated GI digestion, with specific peptide fractions showing both ACEi and antiobesogenic effects, demonstrating bioactive peptide survival through digestion.
Why it matters
Validating that food-derived peptides survive digestion and remain active is crucial for developing functional foods and nutraceuticals.
How the study worked
Porcine skin collagen hydrolysis, peptide fraction separation, ACE inhibition assays before and after simulated GI digestion, and antiobesogenic activity evaluation.
What this study cannot tell us
In vitro digestion simulation. In vivo blood pressure and anti-obesity effects need confirmation. Specific active peptides not fully identified.
How to read the evidence
In vitro study with simulated digestion. Well-executed but needs human validation.
When this study was published
Published in 2025.
The bigger picture
Food protein-derived bioactive peptides could provide accessible, affordable alternatives or complements to pharmaceutical ACE inhibitors and anti-obesity drugs.
Questions still open
- Which specific peptide sequences survive digestion and are absorbed?
- Would porcine collagen supplements measurably lower blood pressure in humans?
- Could these peptides complement GLP-1 drug therapy?
Common questions
Can eating collagen help blood pressure?
Do these peptides also help with weight?
Read the original research
Antiobesogenic effect of hydrolysates and peptide fractions of porcine collagen after in vitro gastrointestinal digestion.
Journal of proteomics, 322, 105539
Citation
González-Noriega, Julio A; Valenzuela-Melendres, Martín; Hernández-Mendoza, Adrián; Astiazarán-García, Humberto; Islava-Lagarda, Thalia; Tortoledo-Ortiz, Orlando; de la Garza, Ana Laura; Gutierrez-Pacheco, Samaria L; Alvarez-Armenta, Andrés; Ríos-Castro, Emmanuel; Huerta-Ocampo, José A; Peña-Ramos, E Aída. (2026). Antiobesogenic effect of hydrolysates and peptide fractions of porcine collagen after in vitro gastrointestinal digestion.. Journal of proteomics, 322, 105539. https://doi.org/10.1016/j.jprot.2025.105539