Influence of zinc, sodium bicarbonate, and citric acid on the antibacterial activity of ovotransferrin against Escherichia coli O157:H7 and Listeria monocytogenes in model systems and ham.

摘要: The influence of NaHCO(3) and citric acid on the antibacterial activity apo-ovotransferrin in model systems ham was investigated. 20 mg/mL ovotransferrin solution with added (0, 25, 50, or 100 mM) (0.25 0.5%) evaluated against Escherichia coli O157:H7 Listeria monocytogenes brain heart infusion broth. antimicrobial saturated Fe(2+) Zn(2+) both pathogens also measured. In addition, solutions containing either mM 0.5% were applied to commercial hams inoculated E. L. stored at 4 degrees C for wk. increased as concentration increased. Sodium bicarbonate (100 significantly improved monocytogenes. Citric (0.5%) combined resulted a synergistic effect O157:H7, susceptible alone. diminished strong + use sodium citrate instead did not produce any pathogens. under acidic conditions. Zn-bound prevented growth detected treatment, but Fe-bound had little no inhibitory Ovotransferrin exhibit 2 hams, whereas suppressed irradiated hams. conclusion, combinations NaHCO(3), acid, enhanced monocytogenes, there are some limitations discussed applying meat products.