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Effect of micro‐pattern topography on the attachment and survival of foodborne microorganisms on food contact surfaces
Author(s) -
Lee Jaesung,
Pascall Melvin A.
Publication year - 2018
Publication title -
journal of food safety
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 43
eISSN - 1745-4565
pISSN - 0149-6085
DOI - 10.1111/jfs.12379
Subject(s) - biofilm , bacteria , microorganism , listeria , microbiology and biotechnology , food science , listeria monocytogenes , antimicrobial , food contact materials , escherichia coli , contamination , chemistry , food packaging , biology , ecology , biochemistry , genetics , gene
This study investigated the use of a nonchemical antimicrobial approach to limit the contamination and survival of foodborne bacteria on polymeric films. This was done by monitoring the difference between micropatterned topography films and regular (smooth) films for the attachment and survival of Escherichia coli and Listeria innocua during drying, biofilm formation, and sanitization. Initial bacteria attachments and numbers of survivors on the micro‐pattern topography films were significantly lower in 3 hr short‐term drying tests. Contaminated buffer solution and a milk‐based medium at 10 and 23 °C, for 5 days, were used for the biofilm formation and sanitization tests. No significant differences in numbers of viable bacteria in the biofilms from the two test films were observed prior to cleaning and sanitizing. Viable cells were not detectable on the micro‐pattern topography films after the application of sanitizing solutions, while evidence of cell viability was seen on the smooth films. Practical applications The overall results suggest that the attachment and survivability of foodborne bacteria on films can be inhibited by using physical modification of food contact surfaces. Development of the micro‐pattern materials can also be helpful to reduce the number of viable bacteria on food contact surfaces. This will delay the reformation of biofilms after sanitization.