Food Protection Trends - March/April 2013 - (Page 74)
PEER-REVIEWED ARTICLE
Food Protection Trends, Vol 33, No. 2, p. 74–81
Copyright 2013, International Association for Food Protection
6200 Aurora Ave., Suite 200W, Des Moines, IA 50322-2864
©
Chemical
Decontamination
of Footwear
Soles to Limit
Microbial
Transfer in a Dry
Environment
SCOTT L. BURNETT,1* SUSAN J. EGLAND,1 PAMELA J. MCKELVEY2 AND FREDERICK K. COOK1
MOM Brands, 20802 kensington Boulevard, Lakeville, MN 55044, USA
1
Ecolab Research Center, 655 Lone Oak Drive, Eagan, MN 55121, USA
2
summary
Decontamination of footwear soles by chemical sanitizers is often used in food processing facilities to control the ingress of pathogenic microorganisms and their
spread over floor surfaces, although little has been published to validate effectiveness. This study evaluated four decontamination treatments for efficacy in reducing
microbial populations on footwear soles and for reducing transfer of those populations from soles to floors. Boot soles were inoculated with a mixture of equal parts of
Citrobacter freundii, Pseudomonas fluorescens, and Serratia marcescens, donned, and subjected to treatment with aqueous quaternary ammonium sanitizer (Aqueous
QAC, 1000 ppm) in a footbath mat, dry quaternary ammonium sanitizer (Dry QAC, 1.2% (wt/wt)) in a footbath mat, a spray of sanitizer containing 58.6% isopropyl
alcohol and 150 ppm quaternary ammonium compounds (IPA QAC), and an IPA QAC spray followed by Dry QAC in a footbath mat (IPA QAC / Dry QAC). Before and after
treatment, footwear soles and floor surfaces were sampled. No significant reductions in microbial populations on soles were observed upon treatment with Aqueous QAC,
Dry QAC, compared with no treatment (control). Decontamination with IPA QAC and IPA QAC / Dry QAC resulted in 2.3 and 3.5 log reductions, respectively. Populations
recovered from floor surfaces indicated IPA QAC and IPA QAC / Dry QAC treatments significantly reduced transfer of bacteria. Results of this study demonstrate that
use of IPA QAC for decontamination of footwear may provide a significant barrier against the spread of microorganisms by foot traffic.
*Author for correspondence: Phone: +1 952.322.8281; Fax: +1 952.922.8008; E-mail: slburnett@mombrands.com
74
FOOD PROTECTION TRENDS MARCH–APRIL 2013
http://www.foodprotection.org/files/food-protection-trends/Mar-13-Burnett.pdf
Table of Contents for the Digital Edition of Food Protection Trends - March/April 2013
Food Protection Trends - March/April 2013
Contents
COMMENTARY
Predictors of Eating Raw or Undercooked Meat , Poultry , Seafood, and Eggs among Older Adults
Chemical Decontamination of Footwear Soles
“...Melamine-associated Nephrotoxic Renal Failure Outbreak among Pets...”
A How-to Guide to Develop and Conduct Validations
BEYOND THE BIO
SPECIAL INTEREST PAPER
general fund statement
PDG HIGHLIGHT
INDUSTRY PRODUCTS
COMING EVENTS
Food Protection Trends - March/April 2013
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