Assessment of Microbiological Safety and Quality of Marinades Used To Treat Beef and That Were Collected over a 12-Month Period from Specialty Retailers Near Raleigh, North Carolina

Journal of Food Protection
Yangjin JungJohn B Luchansky

Abstract

In total, 115 marinade samples (58 fresh marinades and 57 spent marinades) were collected over 12 months from specialty retailers (four individual stores) near Raleigh, NC. These marinades were screened for total mesophilic aerobic plate count (M-APC), total psychrotrophic aerobic plate count (P-APC), and Enterobacteriaceae. These marinades were also screened for the seven regulated serogroups of Shiga toxin-producing Escherichia coli. Stores A and B used immersion to marinade raw beef cuts, whereas stores C-1 and C-2 used vacuum tumbling. In general, marinade temperatures at the stores ranged from 1.8 to 6.6°C, and beef cuts were marinated from a few minutes to up to 3 days. Regardless of the process used to marinade meat, levels of M-APC and P-APC in fresh marinades ranged from 3.4 to 4.7 and 1.4 to 1.8 log CFU/mL, respectively, whereas Enterobacteriaceae were not detected in any fresh marinades, even after enrichment. However, levels of M-APC, P-APC, and Enterobacteriaceae in spent marinades collected from stores C-1 and C-2 (ca. 3.6 to 7.1 log CFU/mL) were significantly higher ( P < 0.05) compared with levels of these same types of bacteria enumerated from spent marinades collected at stores A and B (ca. ≤0.7 to 4.9 log CFU...Continue Reading

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Citations

Apr 23, 2019·Journal of Food Protection·Yangjin JungJohn B Luchansky
Nov 23, 2018·Proceedings. Biological Sciences·S F RyanR R Dunn

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