Red Pomegranate Peptides Show ACE and DPP-4 Inhibition Plus Antibacterial Activity | Research

The takeaway

Peptides from red pomegranate protein hydrolysates showed triple functionality: antibacterial activity, ACE inhibition (blood pressure), and DPP-4 inhibition (blood sugar), demonstrating multi-target bioactive food peptides.

Triple-action food peptides
Pomegranate protein produces peptides that fight bacteria, lower blood pressure, and support blood sugar — three health benefits from one food

What the researchers found

Red pomegranate protein hydrolysates demonstrated triple bioactivity: antibacterial, ACE-inhibitory, and DPP-4-inhibitory properties from food-derived peptides.

Why it matters

Finding a common food with peptides that simultaneously fight infections, lower blood pressure, and improve blood sugar control validates the concept of multi-target functional foods.

The numbers in context

Essential amino acids: ~23.3%. Hydrophobic amino acids: ~32.9%. Antioxidant amino acids: ~13.9%. PER index: ~2.1. Four enzymes tested.

How the study worked

Enzymatic hydrolysis of red pomegranate protein. Assessed antibacterial, ACE inhibitory, and DPP-4 inhibitory activities. Characterized nutritional value and bioactive peptide profiles.

Who was studied

N/A — in vitro enzymatic and antibacterial study

What this study cannot tell us

In vitro study. Bioactive peptide levels from dietary pomegranate consumption may be too low for therapeutic effects. Digestive stability needs confirmation.

How to read the evidence

Preliminary evidence: in vitro characterization of pomegranate protein bioactive peptide activities.

When this study was published

Published in 2025. Expands pomegranate health science beyond antioxidants to bioactive peptides.

The bigger picture

Food-derived peptides with multiple health-promoting activities support the "food as medicine" concept. Pomegranate joins dairy, fish, and legumes as a source of multi-functional bioactive peptides.

Questions still open

Could pomegranate protein supplements provide meaningful cardiometabolic benefits?
Which specific pomegranate peptide sequences are most active?
How do pomegranate peptides compare to dairy-derived bioactive peptides in potency?

Common questions

Is pomegranate good for blood pressure and blood sugar?

This study found pomegranate proteins release peptides that inhibit both ACE (blood pressure enzyme) and DPP-4 (preserves GLP-1 for blood sugar). While the effect from dietary consumption is mild compared to drugs, pomegranate adds multi-target health support to your diet.

How do I get these pomegranate peptides?

Your body naturally releases these peptides when you digest pomegranate protein. Eating whole pomegranate (including seeds) provides the protein source. Pomegranate juice has less protein but more antioxidants. Future supplements could concentrate the bioactive peptides.

Read the original research

Nutritional value, antibacterial activity, ACE and DPP IV inhibitory of red pomegranate seeds protein and peptides.

Scientific reports, 15(1), 10802

View on PubMed ↗Publisher’s paper ↗

Citation

Akbarbaglu, Zahra; Mazloomi, Narges; Karimzadeh, Laleh; Sarabandi, Khashayar; Jafari, Seid Mahdi; Hesarinejad, Mohammad Ali. (2025). Nutritional value, antibacterial activity, ACE and DPP IV inhibitory of red pomegranate seeds protein and peptides.. Scientific reports, 15(1), 10802. https://doi.org/10.1038/s41598-025-95089-5