Antibacterial Activity and In vitro Probiotic Properties of Lactococcus lactis Isolated from Sea Bass (Dicentrarchus labrax)

This study aimed to screen the antibacterial effect of Lactococcus lactis against selected pathogens and characterize its probiotic properties in vitro. The whole-cell product cell-free supernatant L. were tested compound was found be greater than that supernatant. exhibited greatest inhibitory A. veronii from which it isolated same environment. showed observable growth at 4-37 °C, 1-4% NaCl, 0.3% ox gall pH 2-3. cells had 89.3 % hydrophobicity. Of 19 enzymes API-ZYM system, only 7 evident for strain. resistant streptomycin sulfadiazine but susceptible other antibiotics commonly used aquaculture. It γ-hemolytic. results demonstrated such as being able survive a wide temperature salinity range, growing acidic bile salt environments, producing can support digestion. According these findings, may have potential supplement