The study assessed the probiotic potential and safety of seven Enterococcus faecalis strains from healthy Chinese infants, focusing on various survival and adhesion factors.
All strains showed good tolerance to low pH, NaCl, and bile salts, with strain A3-1 demonstrating superior adhesion, antibacterial activity, and biofilm production.
While the isolates carried several virulence genes, none displayed significant pathogenic traits and showed varying susceptibility to antibiotics, with strain A3-1 identified as the most promising probiotic candidate.