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Comparative study of pear drying using solar stove and tunnel drying

2010Conference object Open access
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dc.contributor.authorGuiné, Raquel
dc.contributor.authorBarroca, Maria João
dc.contributor.authorLopes, Paulo
dc.contributor.authorSilva, Vitor
dc.contributor.authorLima, Maria João
dc.contributor.authorFerreira, Dulcineia
dc.date.accessioned2013-01-07T10:00:18Z
dc.date.available2013-01-07T10:00:18Z
dc.date.issued2010
dc.description.abstractSun-dried pears of Portuguese S. Bartolomeu variety are relatively small fruits with peculiar organolephtic characteristics. The open sun drying has some disadvantages related with drying efficiency and food safety. However the drying with an economic and friendly energy is an important characteristic of the drying methods and therefore several attempts have been made to develop processes using solar drying. The present work studies two types of pears drying, namely solar stove and tunnel drying, using the solar energy and simultaneously reducing the exposure of fruits to contamination agents. Both processes were conducted in two consecutive years to analyse if the behaviour of each drying method shows evidence of a similar pattern. The results enable us to conclude that the variation of normalized moisture of pears with the drying time follows a linear relationship while an exponential decay is observed in the tunnel drying. Despite the different climatic conditions, it is possible still to observe that the behavior of each process is quite similar in both consecutive years. However, in the year of 2008 the drying tends to be faster in both processes. In addition, it is also possible to conclude that the Total Soluble Solids/Acidity ratio has a similar behavior along the drying in the two years for each process. However, the decrease of acidity of pears in solar stove is more pronounced than the TSS and consequently a higher ratio of Total Soluble Solids/Acidity is observed along the solar stove drying when compared with the tunnel drying.por
dc.identifier.citationGuiné RPF, Barroca MJ, Lopes P, Silva V, Lima MJ, Ferreira D. (2010) Comparative study of pear drying using solar stove and tunnel drying. Livro de resumos e CD-Rom de Proceedings of the 5th CEFood (CD-Rom), 3 pp., Bratislava, Eslováquia.por
dc.identifier.urihttp://hdl.handle.net/10400.19/1333
dc.language.isoengpor
dc.peerreviewedyespor
dc.subjectPearpor
dc.subjectdryingpor
dc.subjectTunnel dryingpor
dc.titleComparative study of pear drying using solar stove and tunnel dryingpor
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceBratislavapor
oaire.citation.title5th CEFoodpor
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor

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