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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2005-9-16
pubmed:abstractText
Hydrogen peroxide (2.5%) alone or hydrogen peroxide (1%) in combination with nisin (25 microg/ml), sodium lactate (1%), and citric acid (0.5%) (HPLNC) were investigated as potential sanitizers for reducing Escherichia coli O157:H7 or Listeria monocytogenes populations on whole cantaloupe and honeydew melons. Whole cantaloupes inoculated with E. coli O157:H7 and L. monocytogenes at 5.27 and 4.07 log10 CFU/cm2, respectively, and whole honeydew melons inoculated with E. coli O157:H7 and L. monocytogenes at 3.45 and 3.05 log10 CFU/cm2, respectively, were stored at 5 degrees C for 7 days. Antimicrobial washing treatments were applied to inoculated whole melons on days 0 or 7 of storage and surviving bacterial populations and the numbers transferred to fresh-cut pieces were determined. At days 0 and 7 treatment with HPLNC significantly (p<0.05) reduced the numbers of both pathogens, by 3 to 4 log CFU/cm2 on both types of whole melon. Treatment with HPLNC was significantly (p<0.05) more effective than treatment with 2.5% hydrogen peroxide. While fresh-cut pieces prepared from stored whole melons were negative for the pathogens by both direct plating and by enrichment, fresh-cut pieces from cantaloupe melons treated with 2.5% hydrogen peroxide were positive for both pathogens and pieces from honeydew melons were positive for E. coli 0157:H7. The native microflora on fresh-cut melons were also substantially reduced by HPLNC treatment of whole melons. The results suggest that HPLNC could be used to decontaminate whole melon surfaces and so improve the microbial safety and quality of fresh-cut melons.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0168-1605
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
104
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
225-33
pubmed:meshHeading
pubmed-meshheading:16043249-Anti-Bacterial Agents, pubmed-meshheading:16043249-Citric Acid, pubmed-meshheading:16043249-Colony Count, Microbial, pubmed-meshheading:16043249-Consumer Product Safety, pubmed-meshheading:16043249-Cucumis melo, pubmed-meshheading:16043249-Cucurbitaceae, pubmed-meshheading:16043249-Dose-Response Relationship, Drug, pubmed-meshheading:16043249-Drug Synergism, pubmed-meshheading:16043249-Escherichia coli O157, pubmed-meshheading:16043249-Food Handling, pubmed-meshheading:16043249-Food Microbiology, pubmed-meshheading:16043249-Food Preservation, pubmed-meshheading:16043249-Hydrogen Peroxide, pubmed-meshheading:16043249-Hygiene, pubmed-meshheading:16043249-Listeria monocytogenes, pubmed-meshheading:16043249-Nisin, pubmed-meshheading:16043249-Sodium Lactate, pubmed-meshheading:16043249-Temperature, pubmed-meshheading:16043249-Time Factors
pubmed:year
2005
pubmed:articleTitle
Use of hydrogen peroxide in combination with nisin, sodium lactate and citric acid for reducing transfer of bacterial pathogens from whole melon surfaces to fresh-cut pieces.
pubmed:affiliation
Food Safety Intervention Technologies Research Unit, Eastern Regional Research Center, Agricultural Research Service, U.S. Department of Agriculture, 600 East Mermaid Lane, Wyndmoor, Pennsylvania 19038, USA. dukuku@errc.ars.usda.gov
pubmed:publicationType
Journal Article