Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.19/1120
Título: Influence of Drying Treatment on Physical Properties of Pumpkin
Autor: Henriques, Francisca
Guiné, Raquel
Barroca, Maria João
Palavras-chave: pumpkin
freeze drying
colour
drying
texture
Data: 2012
Citação: Henriques F, Guiné RPF, Barroca MJ (2012) Influence of Drying Treatment on Physical Properties of Pumpkin. Croatian Journal of Food Technology, Biotechnology and Nutrition, 7 (Special Issue), 53-58.
Resumo: The aim of this work was to evaluate the properties of pumpkin (Cucurbita maxima L.) exposed to convective air drying and freeze-drying. The samples were analyzed in terms of physical properties (colour and texture). The trials in the convective chamber were done at 40 ºC and 60 ºC, in the drying tunnel at 60 ºC and in the freeze dryer at -50 ºC. It was concluded that the freeze drying and the air drying at 40 ºC produced smaller changes in the colour while the drying in the tunnel originated more intense colour changes. With respect to texture, it was possible to deduce that the pulp in the fresh product at 2 cm off from the skin is harder than the pulp at 4 cm off from the skin. As to the effect of drying in the texture of the pumpkin, it was observed that all dryings affected texture considerably when compared to the fresh product. In fact, hardness varied from 75 % in the drying in chamber at 40 ºC to 90 % in the tunnel drying, when compared to the fresh product. As to springiness, it was changed more in the drying at 40 ºC, while cohesiveness showed the higher change in the freeze drying treatment.
Peer review: yes
URI: http://hdl.handle.net/10400.19/1120
Aparece nas colecções:ESAV - DIA - Artigos publicados em revista científica

Ficheiros deste registo:
Ficheiro Descrição TamanhoFormato 
SCAN_Pumpkin_Propriedades Fisicas.pdf219,66 kBAdobe PDFVer/Abrir


FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote Degois 

Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.