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Effectiveness of acidic calcium sulfate with propionic and lactic acid and lactates as postprocessing dipping solutions to control listeria monocytogenes on frankfurters with or without potassium lactate and stored vacuum packaged at 4.5 °C.

Author(s) : NUÑEZ de GONZALEZ M. T., KEETON J. T., ACUFF G. R., et al.

Type of article: Article

Summary

The safety of ready-to-eat meat products such as frankfurters can be enhanced by treating with approved antimicrobial substances to control the growth of Listeria monocytogenes. The authors evaluated the effectiveness of acidic calcium sulfate with propionic and lactic acid, potassium lactate, or lactic acid postprocessing dipping solutions to control L. monocytogenes inoculated onto the surface of frankfurters with or without potassium lactate and stored in vacuum packages at 4.5 °C for up to 12 weeks. Two frankfurter formulations were manufactured without (control) or with potassium lactate (KL). After cooking, chilling, and peeling, each batch was divided into inoculated (four strains of L. monocytogenes mixture) and non inoculated groups. Each group was treated with four different dips: (i) control (saline solution), (ii) acidic calcium sulfate with propionic and lactic acid (iii) KL, or (iv) lactic acid (LA) for 30 s. Noninoculated frankfurters were periodically analyzed for pH, water activity, residual nitrite, and aerobic plate counts (APCs), and L. monocytogenes counts were determined on inoculated samples. Surface APC counts remained at or near the lower limit of detection franks with or without KL and treated with ACS or LA throughout 12 weeks at 4.5 °C. L. monocytogenes counts remained at the minimum level of detection on all franks treated with the ACS dip. L. monocytogenes numbers were also reduced, but not to the same degree in franks made without or with KL and treated with LA. These results revealed the effectiveness of ACS (bactericidal effect) or LA (bacteriostatic effect) as postprocessing dipping solutions to inhibit or control the growth of L. monocytogenes on vacuum-packaged frankfurters stored at 4.5 °C for up to 12 weeks.

Details

  • Original title: Effectiveness of acidic calcium sulfate with propionic and lactic acid and lactates as postprocessing dipping solutions to control listeria monocytogenes on frankfurters with or without potassium lactate and stored vacuum packaged at 4.5 °C.
  • Record ID : 2005-0284
  • Languages: English
  • Source: Journal of Food Protection - vol. 67 - n. 5
  • Publication date: 2004/05

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