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Enterococcus faecalis and pseudomonas aeruginosa behaviour in frozen watercress (Nasturtium Officinale) submitted to temperature abuses

2009Journal article Open access
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dc.contributor.authorOliveira, Sílvia R.
dc.contributor.authorCruz, Rui M.S.
dc.contributor.authorVieira, Margarida C.
dc.contributor.authorSilva, Cristina L.M.
dc.contributor.authorGaspar, Maria N.
dc.date.accessioned2010-10-07T14:13:35Z
dc.date.available2010-10-07T14:13:35Z
dc.date.issued2009
dc.description.abstractWatercress is an herb traditionally consumed fresh. If frozen, would be readily available to consumers. However, pathogenics resistant to frozen storage are a safety concern in this new product. In this study watercress was artificially contaminated with Pseudomonas aeruginosa ATCC 27853 and Enterococcus faecalis ATCC 29212. Their survival was evaluated after blanching, frozen storage and temperature fluctuations of the frozen product. The blanching caused a reduction of about 2 log cfu per gram of product of total viable count (TVC) and about 1.7 and 1.3 log cfu per gram of product of P. aeruginosa and E. faecalis, respectively. P. aeruginosa seemed to be more sensitive to temperature abuses than E. faecalis. After 3 months, TVC was still observed with a reduction of about 3 log cfu per gram of product. At the end of the study, exposure to freeze–thaw cycles resulted in death or injury of the microorganisms. These findings on the behaviour of two microorganisms of concern in frozen watercress will help improving the safety and cold chain settings for this product.por
dc.identifier.citation"International Journal of Refrigeration". ISSN 0140-7007. 32: 3 (2009) 472-477por
dc.identifier.doi10.1016/j.ijrefrig.2008.08.002
dc.identifier.urihttp://hdl.handle.net/10400.14/2686
dc.language.isoengpor
dc.publisherElsevierpor
dc.subjectFreezingpor
dc.subjectThawingpor
dc.subjectSaladpor
dc.subjectWatercresspor
dc.subjectCultivarpor
dc.subjectSurvivalpor
dc.subjectEnterococcuspor
dc.subjectPseudomonaspor
dc.titleEnterococcus faecalis and pseudomonas aeruginosa behaviour in frozen watercress (Nasturtium Officinale) submitted to temperature abusespor
dc.typejournal article
dspace.entity.typePublication
person.familyNameCruz
person.familyNameVieira
person.familyNameSilva
person.givenNameRui
person.givenNameMargarida
person.givenNameCristina
person.identifier1123160
person.identifier1473674
person.identifier.ciencia-idAB11-B31E-1AF2
person.identifier.ciencia-id3314-4EFC-1E4A
person.identifier.ciencia-id6611-634A-132C
person.identifier.orcid0000-0002-0839-1881
person.identifier.orcid0000-0003-2774-706X
person.identifier.orcid0000-0002-0495-3955
person.identifier.ridE-1805-2012
person.identifier.ridA-3568-2013
person.identifier.scopus-author-id8522888800
person.identifier.scopus-author-id7202140775
person.identifier.scopus-author-id7201387397
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication0893af24-7342-4525-84e2-2486f54a04e8
relation.isAuthorOfPublication309a0970-cf9e-45aa-90a8-aa2f2ba96fc0
relation.isAuthorOfPublication4e2903de-0679-4cb1-981e-10de14c0c995
relation.isAuthorOfPublication.latestForDiscovery4e2903de-0679-4cb1-981e-10de14c0c995

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