Molecular characterization of peptide fractions of a Tilapia (Oreochromis niloticus) by-product hydrolysate and in vitro evaluation of antibacterial activity

- OFFGEL-nLC-MALDI-TOF/TOF is a powerful tool to characterize complex hydrolysate.
- Tilapia hydrolysate was mainly composed of polypeptides and oligopeptides.
- 1374 peptides were identified by mass spectrometry from Tilapia hydrolysate.
- Tilapia hydrolysate exhibits antimicrobial activity against Yersinia ruckeri.