Tilapia Bone Collagen Peptides Triple Calcium Absorption in Intestinal Cells
Three peptides from tilapia bone collagen increased calcium transport across intestinal cells by up to 202% within 30 minutes by chelating calcium for easier absorption.
Quick Facts
What This Study Found
FDHIVY peptide from tilapia bone collagen enhanced intestinal calcium transport by 202% in Caco-2 cells within 30 minutes via calcium chelation.
Key Numbers
GPAGPHGPVG 89%, FDHIVY 202%, YQEPVIAPKL 130% calcium transport enhancement; Ca-chelating: 18.80, 35.73, 28.4 mg/g
How They Did This
Peptide isolation by RP-HPLC from tilapia bone collagen hydrolysate; sequence determination by LC-MS/MS; synthetic peptide calcium-chelating assays; Caco-2 cell monolayer calcium transport assays.
Why This Research Matters
Calcium deficiency affects billions worldwide. Peptides that enhance calcium absorption from food could improve bone health without requiring high-dose calcium supplements.
The Bigger Picture
Collagen peptides from fish processing waste could become functional food ingredients that improve mineral absorption — turning industry byproducts into health solutions.
What This Study Doesn't Tell Us
In vitro Caco-2 model only — may not reflect in vivo absorption; peptide stability during digestion not tested; effective oral dose for humans unknown.
Questions This Raises
- ?Do these peptides survive stomach acid and digestive enzymes intact?
- ?Would adding these peptides to calcium supplements improve bioavailability in humans?
- ?Could these peptides help prevent osteoporosis in calcium-deficient populations?
Trust & Context
- Key Stat:
- +202% calcium transport FDHIVY peptide tripled calcium absorption across intestinal cells within 30 minutes
- Evidence Grade:
- Preliminary — in vitro cell model with synthetic peptide validation, but no in vivo or clinical data.
- Study Age:
- Published in 2020; fish-derived calcium-binding peptides remain an active research area.
- Original Title:
- Three Newly Isolated Calcium-Chelating Peptides from Tilapia Bone Collagen Hydrolysate Enhance Calcium Absorption Activity in Intestinal Caco-2 Cells.
- Published In:
- Journal of agricultural and food chemistry, 68(7), 2091-2098 (2020)
- Authors:
- Liao, Wanwen, Chen, Hui(4), Jin, Wengang, Yang, Zhennai, Cao, Yong, Miao, Jianyin
- Database ID:
- RPEP-04956
Evidence Hierarchy
Frequently Asked Questions
How do peptides help with calcium absorption?
The peptides bind (chelate) calcium, keeping it soluble in the intestine. Soluble calcium is absorbed much more easily than the insoluble calcium that forms in the gut.
Is this better than taking calcium pills?
Potentially — calcium supplements often have poor absorption. Adding chelating peptides could help more of the calcium actually get into your body, but this needs to be tested in people.
Read More on RethinkPeptides
Cite This Study
https://rethinkpeptides.com/research/RPEP-04956APA
Liao, Wanwen; Chen, Hui; Jin, Wengang; Yang, Zhennai; Cao, Yong; Miao, Jianyin. (2020). Three Newly Isolated Calcium-Chelating Peptides from Tilapia Bone Collagen Hydrolysate Enhance Calcium Absorption Activity in Intestinal Caco-2 Cells.. Journal of agricultural and food chemistry, 68(7), 2091-2098. https://doi.org/10.1021/acs.jafc.9b07602
MLA
Liao, Wanwen, et al. "Three Newly Isolated Calcium-Chelating Peptides from Tilapia Bone Collagen Hydrolysate Enhance Calcium Absorption Activity in Intestinal Caco-2 Cells.." Journal of agricultural and food chemistry, 2020. https://doi.org/10.1021/acs.jafc.9b07602
RethinkPeptides
RethinkPeptides Research Database. "Three Newly Isolated Calcium-Chelating Peptides from Tilapia..." RPEP-04956. Retrieved from https://rethinkpeptides.com/research/liao-2020-three-newly-isolated-calciumchelating
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.