Abstract
European seabass (Dicentrarchus labrax, Linnaeus, 1758) (L) and gilthead seabream (Sparus aurata, Linnaeus, 1758) (C) muscles were hydrolysated by Alcalase (Lalc, Calc) and Chymotrypsin (Lch, Cch) then hydrolysates were examined and their peptide profiles obtained. A total of 765, 794, 132 and 232 peptides were identified in Calc, Lalc, Cch and Lch, respectively. Although, Lch and Cch were expected to have more antioxidant capacity because of their peptide profiles, Alcalase hydrolysates observed in vitro, were slightly higher (TEAC assay for Calc: 848.11 ± 60.78 μmol TE/g protein). Maximum inhibition of oxidative stress was determined for Lalc (12.8% ± 4.5%) in MDCK1 cell lines. Highest proliferative capacity observed for Calc (147.0% ± 3.1%) at MTT assay in MDCK1 cell culture. Lch showed the highest chemopreventive effect with a 40–60% decrease for human colon adenocarcinoma cell line HT-29. This research points out the importance of aquatic sources as raw materials for peptide researches.
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