English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/77057
Share/Impact:
Statistics
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Principal component analysis to study the effect of temperature fluctuations during storage of frozen potato

AuthorsÁlvarez, M. Dolores ; Canet, Wenceslao
Issue Date2000
PublisherSpringer
CitationEuropean Food Research and Technology 211: 415- 421 (2000)
AbstractThe effects of temperature fluctuation ranges, number of fluctuations carried out, and packaging during frozen storage on the texture of potato tissue in terms of compression, shear, and tension rheological parameters were assessed through data generated according to a factorial design using principal component analysis (PCA). Five ranges of fluctuation (-24 °C to -18 °C, -18 °C to -12 °C, -12 °C to -6°C, -24 °C to -12 °C and -18 °C to -6°C) applied 2, 4, 8, 16, 24, and up to 32 times on unpacked and pre-packed frozen potatoes, were considered. The controls were unpacked and prepacked frozen tissues thawed immediately without undergoing any fluctuation. In addition, several geometrical, technological, and chemical parameters were determined. PCA showed that maximum shear force, Fs was the best rheological parameter for differentiation of the structural damage and softening occurring in the tissue at each treatment, which was closely related to its duration, TTd. PCA did not permit complete discrimination between the five fluctuation ranges, but it clearly separated samples subjected to -18°C/-6 °C from those subjected to -24°C/-18°C. Frozen samples undergoing up to four fluctuations formed a separate cluster from those undergoing a higher number. Analysis also clearly separated unpacked from pre-packed samples in response to slower freezing rates reached in the latter. © Springer-Verlag 2000.
URIhttp://hdl.handle.net/10261/77057
Identifiersissn: 1438-2377
Appears in Collections:(IF) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.