Whey Protein Digestion Releases Peptides That Stimulate Satiety Hormone CCK in Gut Cells
Digested whey protein released low-MW peptides from β-lactoglobulin and α-lactalbumin that stimulated CCK secretion in enteroendocrine cells, with in silico prediction of ACE-inhibitory and DPP-IV-inhibitory bioactivities.
Quick Facts
What This Study Found
<3 kDa whey protein intestinal peptides (from β-La and α-La): strongest CCK stimulation in STC-1 cells. In silico: ACE-inhibitory, DPP-IV-inhibitory, antioxidant, antibacterial activities. ENSAEPE motif identified.
Key Numbers
How They Did This
INFOGEST in vitro digestion, peptidomics (LC-MS/MS), STC-1 enteroendocrine cell CCK secretion assay, and MultiPep in silico bioactivity prediction.
Why This Research Matters
Understanding how food proteins release bioactive peptides during digestion enables designing functional foods that naturally regulate appetite and metabolism.
The Bigger Picture
Whey protein's health benefits may be partly mediated by specific bioactive peptides released during digestion that act on gut hormone cells.
What This Study Doesn't Tell Us
In vitro digestion and cell assays. In silico predictions need experimental validation. Cannot confirm in vivo effects.
Questions This Raises
- ?Would whey protein consumption measurably increase CCK and satiety in humans?
- ?Can whey protein hydrolysates be optimized to maximize CCK-stimulating peptides?
- ?Do the DPP-IV-inhibitory peptides survive to affect GLP-1 levels?
Trust & Context
- Key Stat:
- Satiety from milk protein Small peptides released from whey protein during digestion stimulated CCK — a gut hormone that signals fullness — in enteroendocrine cells
- Evidence Grade:
- In vitro digestion + cell assay + in silico prediction. Mechanistic foundation needing in vivo validation.
- Study Age:
- Published in 2025.
- Original Title:
- Release of Bioactive Peptides from Whey Protein During In Vitro Digestion and Their Effect on CCK Secretion in Enteroendocrine Cells: An In Silico and In Vitro Approach.
- Published In:
- Molecules (Basel, Switzerland), 31(2) (2026)
- Authors:
- Ignot-Gutiérrez, Anaís, Arellano-Castillo, Orlando, Serena-Romero, Gloricel, Alvarado-Olivarez, Mayvi, Guajardo-Flores, Daniel, Martínez, Armando J, Cruz-Huerta, Elvia
- Database ID:
- RPEP-15346
Evidence Hierarchy
Frequently Asked Questions
Does whey protein help control appetite?
This study shows how: during digestion, whey protein releases small peptides that stimulate CCK, a satiety hormone. These peptides also have blood pressure-lowering and blood sugar-regulating properties.
Which whey proteins produce the best appetite-controlling peptides?
β-lactoglobulin and α-lactalbumin released the most CCK-stimulating peptides. Look for whey protein concentrates rich in these proteins.
Read More on RethinkPeptides
Related articles coming soon.
Cite This Study
https://rethinkpeptides.com/research/RPEP-15346APA
Ignot-Gutiérrez, Anaís; Arellano-Castillo, Orlando; Serena-Romero, Gloricel; Alvarado-Olivarez, Mayvi; Guajardo-Flores, Daniel; Martínez, Armando J; Cruz-Huerta, Elvia. (2026). Release of Bioactive Peptides from Whey Protein During In Vitro Digestion and Their Effect on CCK Secretion in Enteroendocrine Cells: An In Silico and In Vitro Approach.. Molecules (Basel, Switzerland), 31(2). https://doi.org/10.3390/molecules31020238
MLA
Ignot-Gutiérrez, Anaís, et al. "Release of Bioactive Peptides from Whey Protein During In Vitro Digestion and Their Effect on CCK Secretion in Enteroendocrine Cells: An In Silico and In Vitro Approach.." Molecules (Basel, 2026. https://doi.org/10.3390/molecules31020238
RethinkPeptides
RethinkPeptides Research Database. "Release of Bioactive Peptides from Whey Protein During In Vi..." RPEP-15346. Retrieved from https://rethinkpeptides.com/research/ignot-gutierrez-2026-release-of-bioactive-peptides
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkPeptides research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.