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Sigmoidal thermal inactivation kinetics of listeria innocua in broth: Influence of strain and growth phase

2009Journal article Open access
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dc.contributor.authorMiller, Fátima A.
dc.contributor.authorGil, Maria M.
dc.contributor.authorBrandão, Teresa R. S.
dc.contributor.authorTeixeira, Paula
dc.contributor.authorSilva, Cristina L.M.
dc.date.accessioned2010-10-07T14:54:12Z
dc.date.available2010-10-07T14:54:12Z
dc.date.issued2009
dc.description.abstractListeria innocua inactivation was studied within the temperature range 52.5–65.0 ºC, comparing two different strains (10528 and 2030c) and two growth phases (exponential and stationary). Survival curves may present a sigmoidal behaviour, with an initial shoulder (L), followed by a maximum inactivation rate (kmax) period and a final tailing tendency. A Gompertz-inspired model was used to fit experimental data, and kinetic parameters (L, kmax and tail) were estimated by non-linear regression analysis. The influence of temperature, growth phase and strain on kinetic parameters was studied using a 23 factorial experimental design. Results showed that temperature and growth phase were the most significant variables affecting the kinetic parameters. Listeria thermal inactivation varied from a log-linear tendency till a pronounced sigmoidal behaviour, depending on the studied factors.por
dc.identifier.citation"Food Control". ISSN 0956-7135. 20: 12 (2009) 1151–1157por
dc.identifier.urihttp://hdl.handle.net/10400.14/2694
dc.language.isoengpor
dc.publisherElsevierpor
dc.relation.publisherversionhttp://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T6S-4VXB8T6-1&_user=2460358&_coverDate=12%2F31%2F2009&_rdoc=14&_fmt=high&_orig=browse&_origin=browse&_zone=rslt_list_item&_srch=doc-info%28%23toc%235038%232009%23999799987%231143072%23FLA%23display%23Volume%29&_cdi=5038&_sort=d&_docanchor=&_ct=17&_acct=C000057417&_version=1&_urlVersion=0&_userid=2460358&md5=d400f7f5ec8198553add67dd89b0d1f0&searchtype=apor
dc.subjectListeria innocuapor
dc.subjectThermal inactivationpor
dc.subjectGrowth phasepor
dc.titleSigmoidal thermal inactivation kinetics of listeria innocua in broth: Influence of strain and growth phasepor
dc.typejournal article
dspace.entity.typePublication
person.familyNameMiller
person.familyNameGil
person.familyNameBrandão
person.familyNameTeixeira
person.familyNameSilva
person.givenNameFatima
person.givenNameMaria M
person.givenNameTeresa
person.givenNamePaula
person.givenNameCristina
person.identifierG-5364-2013
person.identifierJ-9418-2012
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person.identifier.ciencia-id7313-A289-DF48
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person.identifier.ciencia-id6611-634A-132C
person.identifier.orcid0000-0002-3715-6231
person.identifier.orcid0000-0002-8008-9839
person.identifier.orcid0000-0002-8857-6471
person.identifier.orcid0000-0002-6296-5137
person.identifier.orcid0000-0002-0495-3955
person.identifier.ridG-5364-2013
person.identifier.ridJ-9418-2012
person.identifier.ridJ-8678-2014
person.identifier.ridA-3568-2013
person.identifier.scopus-author-id15056315100
person.identifier.scopus-author-id12785024700
person.identifier.scopus-author-id6602174128
person.identifier.scopus-author-id7005895206
person.identifier.scopus-author-id7201387397
rcaap.rightsopenAccesspor
rcaap.typearticlepor
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