Abstract
The objectives of this study were to determine the antimicrobial effects of sodium metasilicate (SMS) against Salmonella and psychrotrophic organisms in fresh, boneless, uncooked chicken breast fillets and to ascertain the effects of SMS treatments on pH. Chicken breast fillets were inoculated with Salmonellaenterica serovar Typhimurium treated with 0% SMS and no inoculum (negative control), 0% SMS and inoculum (positive control), 1% SMS, or 2% SMS solutions and stored at 4 ± 1°C. All samples were analyzed after 0, 1, 3, 5, and 7 d for Salmonella, psychrotrophic organisms, and pH. The fillets that were treated with 1 or 2% SMS had lower (P < 0.05) Salmonella counts as compared with those of the positive control at 3 through 7 d. Reductions in Salmonella Typhimurium were 0.83 to 0.91 log cfu/g and 1.04 to 1.16 log cfu/g for 1 and 2% SMS treatments, respectively. The psychrotrophic counts were similar (P > 0.05) for all treatments. The pH values for samples treated with 1 or 2% SMS were higher (P < 0.05) when compared with those of the negative and positive controls. This study revealed that SMS could restrict the growth of pathogenic Salmonella Typhimurium in fresh poultry.
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