Yellowfin Tuna Skin Collagen Peptides Show Enhanced Antioxidant Activity After Hydrolysis
Enzymatic hydrolysis of tuna skin collagen and gelatin produced peptide fractions with significantly higher antioxidant activity than the parent proteins, turning seafood waste into bioactive ingredients.
Quick Facts
What This Study Found
Enzymatic hydrolysis of tuna skin collagen (52.7% degree of hydrolysis) and gelatin (45.2%) produced peptide fractions with significantly enhanced antioxidant activity across multiple molecular weight ranges.
Key Numbers
Collagen yield 22.6%; gelatin 20%; DH 52.7%/45.2%; collagen peptides 2.94-11.93 kDa; best antioxidant: <3, 3-10, 10-30 kDa fractions
How They Did This
In-vitro study extracting collagen (acetic acid) and gelatin (citric acid) from tuna skin, followed by Alcalase hydrolysis, molecular weight fractionation, and antioxidant activity measurement.
Why This Research Matters
Fish processing generates massive skin waste. Converting it to antioxidant collagen peptides creates value from waste while producing ingredients for functional foods and nutraceuticals.
The Bigger Picture
This study connects sustainable seafood processing with the growing collagen peptide market, showing that waste streams can produce bioactive ingredients with health-promoting properties.
What This Study Doesn't Tell Us
In-vitro antioxidant assays only; no in-vivo or human data; specific peptide sequences not identified; bioavailability after oral consumption not tested.
Questions This Raises
- ?Which specific peptide sequences in the tuna collagen hydrolysate are responsible for antioxidant activity?
- ?How does tuna collagen peptide antioxidant activity compare to other marine collagen sources?
- ?Would these peptides retain bioactivity after digestion and absorption in humans?
Trust & Context
- Key Stat:
- 22.6% collagen yield from tuna skin Enzymatic hydrolysis produced peptides with higher antioxidant activity than parent collagen and gelatin
- Evidence Grade:
- Basic in-vitro characterization study demonstrating antioxidant activity of peptide fractions, but lacking specific peptide identification and in-vivo validation.
- Study Age:
- Published in 2020; marine collagen peptides continue to grow in the functional food and beauty supplement markets.
- Original Title:
- Characterization and Antioxidant Activity of Collagen, Gelatin, and the Derived Peptides from Yellowfin Tuna (Thunnus albacares) Skin.
- Published In:
- Marine drugs, 18(2) (2020)
- Authors:
- Nurilmala, Mala, Hizbullah, Hanifah Husein, Karnia, Euis, Kusumaningtyas, Eni, Ochiai, Yoshihiro
- Database ID:
- RPEP-05039
Evidence Hierarchy
Frequently Asked Questions
Are fish collagen peptides good antioxidants?
Yes — tuna skin collagen peptides showed significantly higher antioxidant activity after enzymatic breakdown, especially in the smaller molecular weight fractions under 30 kDa.
Can tuna skin waste be used for supplements?
This study shows tuna skin yields over 22% collagen that can be converted to bioactive antioxidant peptides, making it a valuable source for supplement and nutraceutical ingredients.
Read More on RethinkPeptides
Cite This Study
https://rethinkpeptides.com/research/RPEP-05039APA
Nurilmala, Mala; Hizbullah, Hanifah Husein; Karnia, Euis; Kusumaningtyas, Eni; Ochiai, Yoshihiro. (2020). Characterization and Antioxidant Activity of Collagen, Gelatin, and the Derived Peptides from Yellowfin Tuna (Thunnus albacares) Skin.. Marine drugs, 18(2). https://doi.org/10.3390/md18020098
MLA
Nurilmala, Mala, et al. "Characterization and Antioxidant Activity of Collagen, Gelatin, and the Derived Peptides from Yellowfin Tuna (Thunnus albacares) Skin.." Marine drugs, 2020. https://doi.org/10.3390/md18020098
RethinkPeptides
RethinkPeptides Research Database. "Characterization and Antioxidant Activity of Collagen, Gelat..." RPEP-05039. Retrieved from https://rethinkpeptides.com/research/nurilmala-2020-characterization-and-antioxidant-activity
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.