IMMUNOLOGY AND MOLECULAR BIOLOGY In Vitro Studies of Chicken Egg Yolk Antibody (IgY) Against

ABSTRACT Chicken egg yolk antibody (IgY) raised against Salmonella enteritidis or Salmonella typhimurium was found in highly specific activity levels by ELISA. S. enteritidis- and S. typhimurium-specific IgY powder, pre-pared by freeze-drying the egg yolk water-soluble frac-tion, contained 15.5 and 10.0 % of specific IgY, respec-tively. Anti-S. enteritidis IgY cross-reacted 55.3 % with S. typhimurium. The cross-reactivity of anti-S. typhimurium IgY with S. enteritidis was 42.4%. Salmonella-specific IgY was demonstrated to inhibit Salmonella growth in liqui