Tilapia Skin Collagen Peptides Protect Red Blood Cells and Extend Swimming Endurance in Mice
Collagen peptides from tilapia skin reduced red blood cell damage by 67% and extended exhaustive swimming time in mice by lowering lactic acid and preserving energy stores.
Quick Facts
What This Study Found
TSCP at 1 mg/mL reduced AAPH-induced hemolysis from 56.35% to 18.78% (p<0.01). At 2.5 mg/10g/day oral dosing, TSCP prolonged exhaustive swimming time while decreasing serum lactic acid, urea nitrogen, and creatine kinase, and increasing glycogen and SOD.
Key Numbers
Collagen yield 22.6%; hemolysis reduced 56.35% → 18.78%; 5 peptides identified; octapeptide KPFGSGAT strongest; DH 52.7%/45.2%
How They Did This
Prepared collagen hydrolysate from tilapia skin. Tested antioxidant activity via AAPH-induced erythrocyte hemolysis assay. In vivo anti-fatigue testing in mice using loaded swimming to exhaustion. Identified and synthesized five specific peptides from the active fraction.
Why This Research Matters
Tilapia skin is an abundant food processing byproduct. Converting it into functional antioxidant and anti-fatigue supplements adds value while addressing demand for natural performance nutrition products.
The Bigger Picture
This study exemplifies the trend of upcycling fish processing waste into functional food ingredients, combining sustainability with the growing market for collagen-based supplements.
What This Study Doesn't Tell Us
Mouse study — anti-fatigue effects in humans may differ. Specific peptide contributions to overall activity not fully parsed. Bioavailability after oral ingestion not confirmed. No human exercise performance data.
Questions This Raises
- ?Would these tilapia collagen peptides improve exercise performance in humans?
- ?How does the octapeptide compare to other known antioxidant peptides in potency?
- ?What is the bioavailability of these peptides after human digestion?
Trust & Context
- Key Stat:
- 67% less hemolysis Tilapia collagen peptides reduced oxidative red blood cell damage from 56% to 19% in vitro
- Evidence Grade:
- Preliminary — combines in vitro antioxidant data with mouse anti-fatigue testing; no human data available.
- Study Age:
- Published in 2020; fish-derived collagen peptides continue to be investigated for functional food applications.
- Original Title:
- Structural characterization, erythrocyte protection, and antifatigue effect of antioxidant collagen peptides from tilapia (Oreochromis nilotica L.) skin.
- Published In:
- Food & function, 11(11), 10149-10160 (2020)
- Authors:
- Ren, Yao, Wu, Hui, Chi, Yuanlong, Deng, Ruijie, He, Qiang
- Database ID:
- RPEP-05092
Evidence Hierarchy
Tests effects in animals (usually mice or rats), not humans.
What do these levels mean? →Frequently Asked Questions
Can fish skin collagen peptides really help with exercise fatigue?
In mice, these peptides extended swimming endurance by reducing lactic acid buildup, preserving energy stores, and boosting antioxidant enzymes. Human studies would be needed to confirm similar benefits for athletes or exercisers.
Why use tilapia skin for collagen?
Tilapia skin is an abundant waste product from fish processing. It is rich in type I collagen and free from the disease transmission concerns associated with mammalian (bovine/porcine) collagen sources.
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Cite This Study
https://rethinkpeptides.com/research/RPEP-05092APA
Ren, Yao; Wu, Hui; Chi, Yuanlong; Deng, Ruijie; He, Qiang. (2020). Structural characterization, erythrocyte protection, and antifatigue effect of antioxidant collagen peptides from tilapia (Oreochromis nilotica L.) skin.. Food & function, 11(11), 10149-10160. https://doi.org/10.1039/d0fo01803a
MLA
Ren, Yao, et al. "Structural characterization, erythrocyte protection, and antifatigue effect of antioxidant collagen peptides from tilapia (Oreochromis nilotica L.) skin.." Food & function, 2020. https://doi.org/10.1039/d0fo01803a
RethinkPeptides
RethinkPeptides Research Database. "Structural characterization, erythrocyte protection, and ant..." RPEP-05092. Retrieved from https://rethinkpeptides.com/research/ren-2020-structural-characterization-erythrocyte-protection
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.