Assessing of flexible packaging integrity using bacteria

02 February 2016

Package integrity is a critical factor for maintaining product sterility over its entire shelf life. An exposure chamber method was developed to determine the integrity of flexible packaging systems, i.e. flexible multilayer linear low-density polyethylene/nylon pouches with a 100, 50, 25 or 15 µm micro-channel with 5 mm length defect in the sealing area.
Viable cells of Staphylococcus aureus and Escherichia coli have been utilized as model organisms. The results demonstrated that defect pouches with a 100, 50 or 25 µm channel leakage exposed to microbiologically challenging conditions could not maintain the sterility of their contents (Packaging Technology and Science, 18 January 2016).
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