Enhanced Thermal Resistance of Salmonella in Whole Muscle Compared to Ground Beef

Alicia Orta Ramirez, Bradley P Marks, Cristopher R Warsow, Alden M Booren, Elliot T Ryser

Research output: Indexed journal article Articlepeer-review

28 Citations (Scopus)

Abstract

Irradiated beef (whole muscle and ground product with identical fat, protein, and moisture composition) was exposed to a Salmonella-inoculated marinade and heated in brass tubes in a water bath at 55 °C, 60 °C, and 62.5 °C. The bacterial load and thermal lag time were similar ( = 0.05) for both whole and ground muscle; therefore, all samples had equivalent composition, inoculation levels, and thermal histories. Assuming 1st-order kinetics, the inactivation rate constants (k values) in whole muscle were 50% lower than those in ground product at each temperature (P = 0.0001), and Arrhenius-type models described the temperature dependency of k (R2 > 0.95). Because thermal processing regulations are generally based on ground product studies, thermal process validations for meat and poultry products may need to consider the physical state (whole -muscle versuss. ground) of the product being manufactured.
Original languageEnglish
Pages (from-to)m359-m362
Number of pages4
JournalJournal of Food Science
Volume70
Issue number7
Publication statusPublished - 2005

Keywords

  • Thermal resistance, Salmonella, whole muscle, ground meat

Fingerprint

Dive into the research topics of 'Enhanced Thermal Resistance of Salmonella in Whole Muscle Compared to Ground Beef'. Together they form a unique fingerprint.

Cite this