Parma Ham Peptide Lowers Blood Pressure in Rats by Releasing an Active Fragment During Digestion | Research

The takeaway

The umami peptide AHSVRFY from Parma ham lowered blood pressure by 13.9 mmHg in hypertensive rats after oral dosing, working through a digestion-released fragment FY that improves blood vessel function.

-13.9 mmHg
Single oral dose of the ham-derived peptide significantly reduced systolic blood pressure in hypertensive rats

What the researchers found

Oral AHSVRFY reduced SBP by 13.9 ± 2.7 mmHg in SHRs through its GI-released dipeptide FY (ACE IC50 = 45.11 μM), which was absorbed intact and improved vascular endothelial function via NO/ET-1 modulation.

Why it matters

Validates a "digestion-activation-delivery" framework showing that food peptides can be designed to release active fragments during digestion, bridging food science and pharmaceutical development.

How the study worked

Oral dosing in spontaneously hypertensive rats with blood pressure monitoring, simulated GI digestion, plasma peptide identification, endothelial cell (HUVEC) assays, and molecular docking/dynamics simulations.

What this study cannot tell us

Rat model; human blood pressure effects may differ. Single-dose study; chronic effects unknown. The 13.9 mmHg reduction in rats may not translate proportionally to humans.

How to read the evidence

Well-designed preclinical study with in vivo, in vitro, and computational validation. Establishes mechanism but human data needed.

When this study was published

Published in 2025.

The bigger picture

This study demonstrates a principled approach to developing food-derived peptide antihypertensives: understanding exactly how digestion transforms the parent peptide into the actual bioactive form.

Questions still open

Would regular Parma ham consumption provide meaningful blood pressure reduction in humans?
Can FY be developed as a functional food ingredient or nutraceutical?
How does FY compare to captopril for chronic antihypertensive use?

Common questions

Can eating Parma ham lower blood pressure?

This study shows a specific peptide from Parma ham can lower blood pressure in rats. However, ham also contains sodium which raises blood pressure, so eating more ham is not recommended for hypertension. The peptide would need to be isolated and studied in humans.

How does a food peptide lower blood pressure?

The peptide AHSVRFY is broken down during digestion into a smaller piece called FY, which enters the bloodstream. FY inhibits the ACE enzyme (the same target as blood pressure drugs like lisinopril) and improves blood vessel function by boosting nitric oxide.

Read the original research

An in vivo study of the antihypertensive effects of the umami peptide AHSVRFY from Parma ham and its intestinal digestion.

Food & function, 17(1), 315-328

View on PubMed ↗Publisher’s paper ↗

Citation

Ding, Qian; Wang, Tianyu; Dang, Kuo; Wang, Yanli; Pan, Daodong; Xia, Qiang; Gao, Xinchang; Dang, Yali. (2026). An in vivo study of the antihypertensive effects of the umami peptide AHSVRFY from Parma ham and its intestinal digestion.. Food & function, 17(1), 315-328. https://doi.org/10.1039/d5fo03304g