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Modified-atmosphere packaging of hen table eggs: Effects on pathogen and spoilage bacteria.
MedLine Citation:
PMID:  23155038     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
As part of a more comprehensive research activity on the use of modified-atmosphere packaging for the improvement of quality and functional properties of table eggs, the effects of air, 100% CO(2), and 100% O(2) packaging were also evaluated on the survival of experimentally inoculated pathogen bacteria (Salmonella Enteritidis, Escherichia coli, and Listeria monocytogenes) as well as on spoilage bacteria (total aerobic mesophilic bacteria) on table eggs during 30 d of storage at 4, 25, and 37°C by colony count method. In general, temperatures played a major role, rather than gasses, in influencing the bacterial survival. In particular, the lowest microbial loads were registered at 4°C on E. coli and spoilage bacteria, whereas 37°C was the best storage temperature to avoid the psychrotropic microorganism L. monocytogenes development regardless of the gas used. One hundred percent CO(2) packaging, in association with a low storage temperature (4°C), had a significant positive effect in reducing Salmonella loads. On eggs inoculated with L. monocytogenes and stored at 4°C as well as on eggs containing only spoilage bacteria and stored at 25°C, 100% CO(2) resulted the best gas in comparison with air and O(2). One hundred percent CO(2) packaging showed no negative effect on pathogen survival compared with air. Although further improvements are required to control RH within packaging to limit bacteria growth/survival, in view of the positive effects of CO(2) packaging on quality traits of table eggs, 100% CO(2) packaging might represent a promising innovative technique for the maintenance of egg characteristics during transport, retail, and domestic storage.
Authors:
F Pasquali; G Manfreda; P Olivi; P Rocculi; F Sirri; A Meluzzi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Poultry science     Volume:  91     ISSN:  0032-5791     ISO Abbreviation:  Poult. Sci.     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-11-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401150     Medline TA:  Poult Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3253-9     Citation Subset:  IM    
Affiliation:
Department of Food Science, Alma Mater Studiorum, University of Bologna, via del Florio 2, 40064 Ozzano dell'Emilia (BO), Italy; and.
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