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A modified gompertz model to predict microbial inactivation under time-varying temperature conditions

2006Journal article Open access
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dc.contributor.authorGil, Maria M.
dc.contributor.authorBrandão, Teresa R. S.
dc.contributor.authorSilva, Cristina L.M.
dc.date.accessioned2010-10-11T22:09:28Z
dc.date.available2010-10-11T22:09:28Z
dc.date.issued2006
dc.description.abstractDevelopment of effective heat treatments is crucial to achieve food products safety, and predictive microbiology is an excellent tool to design adequate processing conditions. This work focuses on the application of a modified Gompertz model to describe the inactivation behaviour under time-varying temperature conditions at the surface of a food product. Kinetic studies were carried out assuming two different heating regimes, typically used in surface pasteurisation treatments, and compared with isothermal conditions. Parameters were estimated on the basis of generated pseudo-experimental data. It was concluded that the heating period greatly affects microbial inactivation and parameter estimation. If a slow heating treatment is used, the process time should be extended to achieve a given microbial load when compared to a fast heating process. This is explained by the fact that, in the slow heating rate process the temperature was below the lowest temperature for inactivation for a much longer time, in comparison with the fast heating regime. 2005 Elsevier Ltd. All rights reserved.por
dc.identifier.citationGIL, Maria M. ; BRANDÃO, Teresa R.S. ; SILVA, Cristina L.M. - A modified gompertz model to predict microbial inactivation under time-varying temperature conditions. Journal of Food Engineering. ISSN 0260-8774. Vol. 76, nº. 1 (2006), p. 89–94por
dc.identifier.urihttp://hdl.handle.net/10400.14/2847
dc.language.isoengpor
dc.publisherElsevierpor
dc.relation.publisherversionhttp://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T8J-4GHSG9P-5&_user=2460358&_coverDate=09%2F30%2F2006&_rdoc=13&_fmt=high&_orig=browse&_origin=browse&_zone=rslt_list_item&_srch=doc-info%28%23toc%235088%232006%23999239998%23619319%23FLA%23display%23Volume%29&_cdi=5088&_sort=d&_docanchor=&_ct=15&_acct=C000057417&_version=1&_urlVersion=0&_userid=2460358&md5=3f40d1c8cf2f959620434055ff428f9a&searchtype=apor
dc.subjectPredictive microbiologypor
dc.subjectGompertz modelpor
dc.subjectInactivation kineticspor
dc.subjectTime-varying temperaturepor
dc.titleA modified gompertz model to predict microbial inactivation under time-varying temperature conditionspor
dc.typejournal article
dspace.entity.typePublication
person.familyNameGil
person.familyNameBrandão
person.familyNameSilva
person.givenNameMaria M
person.givenNameTeresa
person.givenNameCristina
person.identifierJ-9418-2012
person.identifier1473674
person.identifier.ciencia-id7313-A289-DF48
person.identifier.ciencia-id7B19-E23B-BB31
person.identifier.ciencia-id6611-634A-132C
person.identifier.orcid0000-0002-8008-9839
person.identifier.orcid0000-0002-8857-6471
person.identifier.orcid0000-0002-0495-3955
person.identifier.ridJ-9418-2012
person.identifier.ridA-3568-2013
person.identifier.scopus-author-id12785024700
person.identifier.scopus-author-id6602174128
person.identifier.scopus-author-id7201387397
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication4f6589c9-9aa0-4191-b49f-4ee4d2949822
relation.isAuthorOfPublicationebf7ead0-3772-4fd6-988c-f6b8722de84e
relation.isAuthorOfPublication4e2903de-0679-4cb1-981e-10de14c0c995
relation.isAuthorOfPublication.latestForDiscovery4e2903de-0679-4cb1-981e-10de14c0c995

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