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dc.contributor.authorHernández Yáñez, Eduard
dc.contributor.authorRaventós Santamaria, Mercè
dc.contributor.authorAuleda Amorós, Josep Maria
dc.contributor.authorIbarz, Albert
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Agroalimentària i Biotecnologia
dc.identifier.citationHernandez, E. [et al.]. Concentration of apple and pear juices in a multi-plate freeze concentrator. "Innovate Food Science and Emerging Technologies", Juliol 2009, vol. 3, núm. 10, p. 348-355.
dc.description.abstractIn this article we will examine the process for concentration of apple and pear juices as well as concentration of sugar solutions modelling pear juice (simulation fluid) using a descending film multi-plate freeze concentrator. It has been determined in advance the freezing point of those fluids in the working concentration and temperature intervals. In addition, different parameters were studied to allow tracking of the process of freeze concentration, such as ice accumulation, variation of the content of soluble solids in the solution and in the ice removed, ice production and energy consumption. The apple and pear juices tested showed similar behaviour, while the mixture of sugars used for simulation showed better behaviour, due perhaps to the absence of foam in the process and to the quicker formation of ice. It has been obtained concentrations of 30.2 and 30.8 °Bx with the apple and pear juices, respectively, and up to 32.7 °Bx with the simulation fluid. Industrial relevance: The clarified juices usually are concentrated on an evaporation stage. In this stage the juice is subjected to high temperatures that cause undesirable reactions, such as non enzymatic browning and destruction of nutritive compounds. The freeze concentration is a technology that allows eliminatingwater from the juices at temperatures below the water’s freezing point, what allows obtaining products of better quality. In this work has been applied this technology to concentrate apple and pear juices, obtaining promissory results.
dc.format.extent8 p.
dc.publisherElsevier Science Ltd.
dc.subjectÀrees temàtiques de la UPC::Enginyeria agroalimentària::Indústries agroalimentàries::Tecnologia dels aliments
dc.subject.lcshApple juice
dc.subject.lcshFruit juices
dc.subject.otherFreeze concentration
dc.subject.otherApple and pear juice
dc.subject.otherMulti-plate cryoconcentrator
dc.titleConcentration of apple and pear juices in a multi-plate freeze concentrator
dc.subject.lemacSucs de fruita concentrats
dc.contributor.groupUniversitat Politècnica de Catalunya. ALIMen - Grup de recerca en Enginyeria i Producció Alimentària
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
local.citation.authorHernandez, E.; Raventos, M.; Auleda, J.; Ibarz, A.
local.citation.publicationNameInnovate Food Science and Emerging Technologies

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