Thermodynamic properties applied to the sorption isotherms of kiwifruit

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dc.contributor.authorKohayakawa, M. N.
dc.contributor.authorYamashita, F.
dc.contributor.authorTelis-Romero, J.
dc.contributor.authorGabas, A. L.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:24:08Z
dc.date.available2014-05-20T15:24:08Z
dc.date.issued2001-01-01
dc.description.abstractThe net isosteric heat and entropy of water sorption were calculated for kiwifruit, based on sorption isotherms obtained by the static gravimetric method at different temperatures (20 to 70 degreesC). The Guggenheim-Anderson-deBoer equation was fitted to the experimental data, using direct non-linear regression analysis; the agreement between experimental and calculated values was satisfactory. The net isosteric heat of sorption was estimated from equilibrium sorption data, using the Clausius-Clapeyron equation. Isosteric heats of sorption were found to increase with increasing temperature and could be well adjusted by an exponential relationship. The enthalpy-entropy compensation theory was applied to sorption isotherms and plots of DeltaH versus DeltaS provided the isokinetic temperature, T-B = 450.9 +/- 7.7 K, indicating an enthalpy-controlled desorption process over the whole range of moisture content considered.en
dc.description.affiliationUniv Estadual Paulista, Dept Food Engn & Technol, BR-15054000 Sao Jose do Rio Preto, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Food Engn & Technol, BR-15054000 Sao Jose do Rio Preto, SP, Brazil
dc.format.extent453-462
dc.identifier.citationProceedings of the Second Inter-american Drying Conference. Veracruz 91860: Isnt Tecnologico Veracruz, p. 453-462, 2001.
dc.identifier.urihttp://hdl.handle.net/11449/34793
dc.identifier.wosWOS:000172809000042
dc.language.isoeng
dc.publisherIsnt Tecnologico Veracruz
dc.relation.ispartofProceedings of the Second Inter-american Drying Conference
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectheat of sorptionpt
dc.subjectenthalpypt
dc.subjectentropypt
dc.subjectisothermspt
dc.subjectkiwifruitpt
dc.titleThermodynamic properties applied to the sorption isotherms of kiwifruiten
dc.typeTrabalho apresentado em evento
dcterms.rightsHolderIsnt Tecnologico Veracruz
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências Letras e Ciências Exatas, São José do Rio Pretopt

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Artigos - Engenharia e Tecnologia de Alimentos - IBILCE