Bioactive peptide fractions from collagen hydrolysate of common carp fish byproduct: antioxidant and functional properties
- González Serrano, Diego J.
- Hadidi, Milad
- Varcheh, Matin
- Jelyani, Aniseh Zarei
- Moreno, Andrés
- Lorenzo Rodríguez, José Manuel
DOIAbstract
Collagen isolated from byproducts of common carp was hydrolyzed with alcalase enzyme to obtain peptide fractions. The resulting >30 kDa (PF1), 10–30 kDa (PF2), 3–10 kDa (PF3) and <1 kDa (PF4) fractions were studied for their antioxidant and functional properties. All peptide fractions illustrated antioxidant activity at different concentrations (1, 5, and 10 mg/mL). Although PF4 indicated the highest DPPH radical-scavenging activity (87%) at a concentration of 1 mg/mL, the highest reducing power (0.34) and hydroxyl radical scavenging activity (95.4%) were also observed in PF4 at a concentration of 10 mg/mL. The solubility of the peptide fractions was influenced by pH. The lowest solubility of the peptide fractions was observed at pH 4. The ...
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