Mass transfer kinetics of pulsed vacuum osmotic dehydration of guavas

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorCorrêa, J. L. G.-
Autor(es): dc.creatorPereira, L. M.-
Autor(es): dc.creatorVieira, G. S.-
Autor(es): dc.creatorHubinger, M. D.-
Data de aceite: dc.date.accessioned2026-02-09T11:16:18Z-
Data de disponibilização: dc.date.available2026-02-09T11:16:18Z-
Data de envio: dc.date.issued2015-04-29-
Data de envio: dc.date.issued2015-04-29-
Data de envio: dc.date.issued2009-08-29-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/5586-
Fonte completa do material: dc.identifierhttp://www.sciencedirect.com/science/article/pii/S0260877409004373-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1137296-
Descrição: dc.descriptionThe effects of vacuum pulse and solution concentration on mass transfer of osmotically dehydrated guava slices were studied. Kinetics of weight reduction (WR), water loss (WL), solid gain (SG) and water activity (a w ) were obtained using sucrose solutions at 40, 50 and 60 °Brix and vacuum pulse of 100 mbar for 0, 10 and 15 min at the process beginning. Higher solution concentrations and the vacuum pulse application caused an increase on WL of osmotically dehydrated guavas and reduced the samples water activity. The SG was reduced by the increase on osmotic solution concentration and favored by vacuum applica- tion. Two different models of kinetics diffusion were tested to obtain diffusivity and to compare the accu- racy of these models. The effective diffusivity estimated by the hydrodynamic model well reproduced the effects of process variables on mass transfer kinetics and showed a better agreement to the experimental data than the diffusional model.-
Idioma: dc.languageen-
Publicador: dc.publisherInternational Society of Food Engineering-
Direitos: dc.rightsacesso aberto-
???dc.source???: dc.sourceJournal of Food Engineering-
Palavras-chave: dc.subjectPsidium guajava L.-
Palavras-chave: dc.subjectDehydrated fruit-
Palavras-chave: dc.subjectHydrodynamic model-
Palavras-chave: dc.subjectSucrose concentration-
Título: dc.titleMass transfer kinetics of pulsed vacuum osmotic dehydration of guavas-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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