Repository logo
 
Publication

Estimation of water diffusivity parameters on grape dynamic drying

2010Journal article Open access
Simple item page
dc.contributor.authorRamos, Inês N.
dc.contributor.authorMiranda, João M.R.
dc.contributor.authorBrandão, Teresa R.S.
dc.contributor.authorSilva, Cristina L.M.
dc.date.accessioned2010-11-04T17:50:52Z
dc.date.available2010-11-04T17:50:52Z
dc.date.issued2010
dc.description.abstractA computer program was developed, aiming at estimating water diffusivity parameters in a dynamic drying process with grapes, assessing the predictability of corresponding non-isothermal drying curves. It numerically solves Fick’s second law for a sphere, by explicit finite differences, in a shrinking system, with anisotropic properties and changing boundary conditions. Experiments were performed in a pilot convective dryer, with simulated air conditions observed in a solar dryer, for modelling the process. The equivalent radius of grapes decreased 30% until the end of the process, stressing the need to include shrinkage in mass and heat transfer models. It was observed that macroscopic shrinkage reflects cellular shrinkage, if plotted versus the normalised water content. Diffusivity values ranged between 1 10 16 and 1 10 10 m2/s. The developed methodology yields very good prediction of dynamic drying curves.por
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.citationRAMOS, Inês N...[et al.] - Estimation of water diffusivity parameters on grape dynamic drying. Journal of Food Engineering. ISSN 0260-8774. Vol. 97, n.º 4 (2010), p. 519–525por
dc.identifier.doi10.1016/j.jfoodeng.2009.11.011
dc.identifier.eissn1873-5770
dc.identifier.issn0260-8774
dc.identifier.urihttp://hdl.handle.net/10400.14/3310
dc.identifier.wosWOS:000274673900012
dc.language.isoengpor
dc.publisherElsevierpor
dc.relation18543/98
dc.relationMODELIZAÇÃO DE CINÉTICAS DE CRESCIMENTO E/OU INACTIVAÇÃO DE MICRORGANISMOS NAS ÁREAS DE CONGELAÇÃO E DES- CONTAMINAÇÃO DE ALIMENTOS: DESENVOLVIMENTO DE PROCEDIMENTOS DE PLANEAMENTO EXPERIMENTAL
dc.subjectDynamic convective dryingpor
dc.subjectWater diffusivitypor
dc.subjectGrapespor
dc.subjectNumerical modellingpor
dc.titleEstimation of water diffusivity parameters on grape dynamic dryingpor
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMODELIZAÇÃO DE CINÉTICAS DE CRESCIMENTO E/OU INACTIVAÇÃO DE MICRORGANISMOS NAS ÁREAS DE CONGELAÇÃO E DES- CONTAMINAÇÃO DE ALIMENTOS: DESENVOLVIMENTO DE PROCEDIMENTOS DE PLANEAMENTO EXPERIMENTAL
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F11580%2F2002/PT
oaire.citation.endPage525
oaire.citation.issue4
oaire.citation.startPage519
oaire.citation.titleJournal of Food Engineering
oaire.citation.volume97
person.familyNameRamos
person.familyNameMiranda
person.familyNameBrandão
person.familyNameSilva
person.givenNameInês
person.givenNameJoao
person.givenNameTeresa
person.givenNameCristina
person.identifierJ-9418-2012
person.identifier1473674
person.identifier.ciencia-id7913-12FC-8DE9
person.identifier.ciencia-id761E-9D30-FD60
person.identifier.ciencia-id7B19-E23B-BB31
person.identifier.ciencia-id6611-634A-132C
person.identifier.orcid0000-0002-8390-0690
person.identifier.orcid0000-0002-1830-0525
person.identifier.orcid0000-0002-8857-6471
person.identifier.orcid0000-0002-0495-3955
person.identifier.ridI-9890-2017
person.identifier.ridJ-9418-2012
person.identifier.ridA-3568-2013
person.identifier.scopus-author-id7006766707
person.identifier.scopus-author-id7202982173
person.identifier.scopus-author-id6602174128
person.identifier.scopus-author-id7201387397
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication94376d98-c135-470b-b03f-c8839cf2e76c
relation.isAuthorOfPublication009ad792-d3d0-4bda-bc4f-0074e1045c88
relation.isAuthorOfPublicationebf7ead0-3772-4fd6-988c-f6b8722de84e
relation.isAuthorOfPublication4e2903de-0679-4cb1-981e-10de14c0c995
relation.isAuthorOfPublication.latestForDiscovery4e2903de-0679-4cb1-981e-10de14c0c995
relation.isProjectOfPublication05d3a874-0090-4b99-bd5c-98a1e89107b2
relation.isProjectOfPublication.latestForDiscovery05d3a874-0090-4b99-bd5c-98a1e89107b2

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Estimation of water diffusivity.pdf
Size:
546.17 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
3.44 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

CBQF - Contribuições em Revistas Científicas / Contribution to Journals