| Fate of Escherichia coli O157:H7, Salmonella and Listeria innocua on minimally-processed peaches under different storage conditions. | |
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MedLine Citation:
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PMID: 20688227 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Consumption of fresh-cut produce has sharply increased recently causing an increase of foodborne illnesses associated with these products. As generally, acidic fruits are considered 'safe' from a microbiological point of view, the aim of this work was to study the growth and survival of Escherichia coli O157:H7, Salmonella and Listeria innocua on minimally-processed peaches. The three foodborne pathogens population increased more than 2 log(10)units on fresh-cut peach when stored at 20 and 25 degrees C after 48 h. At 10 degrees C only L. innocua grew more than 1 log(10)unit and it was the only pathogen able to grow at 5 degrees C. Differences in growth occurred between different peach varieties tested, with higher population increases in those varieties with higher pH ('Royal Glory' 4.73+/-0.25 and 'Diana' 4.12+/-0.18). The use of common strategies on extending shelf life of fresh-cut produce, as modified atmosphere packaging and the use of the antioxidant substance, ascorbic acid (2%w/v), did not affect pathogens' growth at any of the temperatures tested (5 and 25 degrees C). Minimally-processed peaches have shown to be a good substrate for foodborne pathogens' growth regardless use of modified atmosphere and ascorbic acid. Therefore, maintaining cold chain and avoiding contamination is highly necessary. |
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Authors:
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Isabel Alegre; Maribel Abadias; Marina Anguera; Josep Usall; Inmaculada Viñas |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-05-15 |
Journal Detail:
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Title: Food microbiology Volume: 27 ISSN: 1095-9998 ISO Abbreviation: Food Microbiol. Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2010-08-06 Completed Date: 2010-12-03 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8601127 Medline TA: Food Microbiol Country: England |
Other Details:
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Languages: eng Pagination: 862-8 Citation Subset: IM |
Copyright Information:
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2010 Elsevier Ltd. All rights reserved. |
Affiliation:
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University of Lleida, Centre UdL-IRTA, XaRTA-Postharvest, Rovira Roure, 191, 25198 Lleida, Catalonia, Spain. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Ascorbic Acid
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metabolism Carbon Dioxide / metabolism Colony Count, Microbial Consumer Product Safety Escherichia coli O157 / growth & development* Food Contamination / prevention & control Food Handling Food Microbiology Food Packaging Food Preservation / methods* Humans Hydrogen-Ion Concentration Listeria / growth & development* Oxygen / metabolism Prunus / microbiology* Salmonella / growth & development* Temperature Time Factors |
| Chemical | |
Reg. No./Substance:
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124-38-9/Carbon Dioxide; 50-81-7/Ascorbic Acid; 7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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