Effect of Microorganism Characteristics on Leak Size Critical to Predicting Package Sterility
Abstract:The effects of microorganism size and motility on the leak size critical to the sterility of a package, along with the imposed pressure required to initiate liquid flow for the critical leak size, were measured. Pseudomonas fragi Lacy-1052, Bacillus atrophaeus ATCC 49337, and Enterobacter aerogenes ATCC 29007 were employed to assess package sterility. One hundred twenty-six 7-mm-long microtubes with interior diameters of 5, 10, and 20 μm were used to simulate package defects. Forty-two solid microtubes were used as controls. No significant differences were found between sizes or motility statuses of test organisms with respect to loss of sterility as a result of microbial ingress into test cells with microtube interior diameters of 5, 10, and 20 μm (P > 0.05). Interactions between the initiation of liquid flow as a result of applied threshold pressures and sterility loss for test cells were significant (P < 0.05).
Document Type: Miscellaneous
Affiliations: 1: Ball Corporation, Metal Container Operations, 6279 Tri-Ridge Boulevard, Suite 210, Loveland, Ohio 45140, USA 2: Department of Food Science and Technology, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA 3: Graham Packaging, York, Pennsylvania, USA 4: College of Agriculture, Forestry and Consumer Sciences, West Virginia University, Morgantown, West Virginia, USA 5: Medical College of Virginia, Virginia Commonwealth University, Richmond, Virginia, USA 6: Department of Plant Pathology and Weed Science, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
Publication date: September 1, 2003
- IAFP Members with personal subscriptions to JFP Online: To access full-text JFP or JMFT articles, you must sign-in in the upper-right corner using your Ingenta sign-in details (your IAFP Member Login does not apply to this website). The Journal of Food Protection (JFP) is a refereed monthly publication. Each issue contains scientific research and authoritative review articles reporting on a variety of topics in food science pertaining to food safety and quality. The Journal is internationally recognized as the leading publication in the field of food microbiology with a readership exceeding 11,000 scientists from 70 countries. The Journal of Food Protection is indexed in Index Medicus, Current Contents, BIOSIS, PubMed, Medline, and many others.
Print and online subscriptions are available to IAFP Members and institutional subscribers. IAFP Members with a subscription to JFP Online will have access to all available JFP and JMFT content. Online visitors who are not IAFP Members or journal subscribers will be charged on a pay-per-view basis. Membership and subscription information is available at www.foodprotection.org.
- Information for Authors
- Submit a Paper
- Subscribe to this Title
- Membership Information
- Information for Advertisers
- ingentaconnect is not responsible for the content or availability of external websites