Effect of Antimicrobial Washes, Essential Oil Vapor Phase, and Antimicrobial Pullulan Coating in Reducing Escherichia coli O157:H7 and Salmonella Typhimurium on Strawberries
Food Protection Trends • 2021
Publication Information
Authors
Mohamed K. Morsy, Mohamed A. Abdelmonem, and Valentina Trinetta
Keywords
Not Available
Journal
Food Protection Trends
Publisher
International Association for Food Protection
Volume
41
Issue
5
Pages
464–475
publication.type
International
Paper Link
Open Link
Supplementary Materials
Not Available
Abstract
The aim of this study was to evaluate three different antimicrobial strategies—washes, essential oil vapor phases, and coatings—against Escherichia coli O157:H7 and Salmonella Typhimurium to improve the safety of strawberries. Results indicated that 0.5% acetic acid and acidified 0.1% sodium chlorite were effective in reducing the population of E. coli O157:H7 (1.6 and 2.6 log CFU/g) and Salmonella Typhimurium (2 and 2.8 log CFU/g), respectively. Thyme essential oil vapor at 500 μL/Lair showed greater inhibition against E. coli O157:H7 and Salmonella Typhimurium on strawberry (2 and 3 log CFU/g, respectively) than oregano oil (1.5 and 2.5 log CFU/g, respectively; P < 0.05). During challenge studies, the coatings containing grape seed nanoparticles and pomegranate peel nanoparticles were demonstrated to effectively inhibit (P < 0.05) these pathogens compared with the control coatings. Overall, a greater antimicrobial activity (>4 log CFU/g) was observed when the different systems were combined, demonstrating the possibility to use these strategies to improve the quality and safety of strawberries.
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