Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/17489
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Title

Effect of gaseous ozone and hot water on microbial and sensory quality of cantaloupe and potential transference of Escherichia coli O157:H7 during cutting

AuthorsSelma, María Victoria CSIC ORCID ; Ibáñez, Ana María; Allende, Ana CSIC ORCID ; Cantwell, Marita; Suslow, Trevor
KeywordsSanitizing
Food-borne pathogens
Melon
Ozone
Escherichia coli 0157:H7
Issue DateFeb-2008
PublisherElsevier
CitationFood Microbiology 25(1): 162-168 (2008)
AbstractThe effect of gaseous ozone and hot water, alone or in combination, on the sensory and microbial quality of cantaloupe melon was investigated. Escherichia coli O157:H7 transmission from the rind to edible melon flesh during cutting practices was also investigated. Four different treatments consisting of hot water (75 °C, 1 min), gaseous ozone (10,000 ppm, 30 min), gaseous ozone supplied by carbon monoxide gas and the combination of hot water and gaseous ozone were evaluated. Sensory quality and growth evolution of aerobic mesophilic and psychrotrophic bacteria, coliforms and molds were studied. In general, hot water, gaseous ozone, and the combination of hot water and gaseous ozone were effective in reducing total microbial population. The combination of hot water and gaseous ozone was the most effective treatment to control microbial growth achieving 3.8, 5.1, 2.2 and 2.3 log reductions for mesophilic and psychrotrophic bacteria, molds and coliforms, respectively. However no significant differences were observed between gaseous ozone and gaseous ozone supplied by with carbon monoxide gas. There was no evidence of damage in melons treated with hot water, ozone or their combination and they maintained initial texture and aroma. Therefore, the combination of hot water and gaseous ozone may be an efficient and promising treatment for controlling microbial growth and maintaining sensory quality of melons.
Description7 pages, 3 tables, 1 figure.
Publisher version (URL)http://dx.doi.org/10.1016/j.fm.2007.06.003
URIhttp://hdl.handle.net/10261/17489
DOI10.1016/j.fm.2007.06.003
ISSN0740-0020
Appears in Collections:(CEBAS) Artículos

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