Survival of Salmonella enterica and Escherichia coli O157:H7 Sprayed onto the Foliage of Field-Grown Cabbage Plants

Journal of Food Protection
Marilyn C EricksonJuan Carlos Diaz-Perez

Abstract

To reduce the number of cabbage pathogen outbreaks, it is essential to understand the fate of enteric pathogens that contaminate plants in the field. To assist in that effort, two independent trials were conducted with a red cultivar (cv. Red Dynasty) and a green cultivar (cv. Bravo F1) of field-grown cabbage ( Brassica oleracea var. capitata). In the first trial, plants with small heads were sprayed with an inoculum containing both attenuated Salmonella enterica Typhimurium and Escherichia coli O157:H7 (5.0 log CFU/mL). Initial pathogen levels (ca. 3.9 log CFU per head), determined through plate count enumeration (limit of detection was 1.3 log CFU/g), dropped precipitously such that 2 days later, they could not be detected by enrichment culture in 22 to 35% of the heads. However, subsequent declines were at a slower rate; no differences were observed between red and green cabbage heads ( P > 0.05), and heads were still positive for the pathogens 22 days after being sprayed with the inoculum. As a result, the logistic model revealed that for every 2 days contaminated cabbage heads remained in the field, the probability of finding a positive sample decreased by a factor of 1.1 (95% confidence interval from 1.0 to 1.2, P = 0.002...Continue Reading

References

Mar 6, 2010·Journal of Food Protection·Marilyn C EricksonMichael P Doyle
Apr 26, 2013·Foodborne Pathogens and Disease·Inge Van der LindenMartine Maes
Feb 5, 2014·Journal of Food Protection·Marilyn C EricksonMichael P Doyle
May 20, 2014·International Journal of Food Microbiology·Robin C McKellarPascal Delaquis
Feb 24, 2015·Epidemiology and Infection·K M HermanL H Gould
Jun 23, 2015·Journal of Pain & Palliative Care Pharmacotherapy· U S Department Of Health And Human Services
Jul 8, 2015·International Journal of Environmental Research and Public Health·Ana Allende, James Monaghan
Apr 12, 2017·PloS One·Zeynal TopalcengizMichelle D Danyluk
May 21, 2017·Microbiology Spectrum·Sarah M MarklandManan Sharma
Dec 13, 2017·International Journal of Food Microbiology·Marilyn C EricksonJennifer L Cannon
Mar 13, 2018·Food Microbiology·Oluwadara Oluwaseun AlegbeleyeAnderson S Sant'Ana
Nov 1, 2010·Comprehensive Reviews in Food Science and Food Safety·Marilyn C Erickson

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Citations

Nov 7, 2019·Journal of Food Protection·Debbie LeeTimothy Coolong
Jun 18, 2020·Frontiers in Microbiology·Tania HenriquezMassimiliano Marvasi

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