Please use this identifier to cite or link to this item: https://hdl.handle.net/1822/52890

TitleOlive oil total phenolic contents and sensory sensations trends during oven and microwave heating processes and their discrimination using an electronic tongue
Author(s)Prata, Rafaela
Pereira, José A.
Rodrigues, Nuno
Dias, Luís G.
Veloso, Ana C. A.
Casal, Susana
Peres, António M.
Issue date19-Feb-2018
PublisherWiley
JournalJournal of Food Quality
CitationPrata, Rafaela; Pereira, José A.; Rodrigues, Nuno; Dias, Luís G.; Veloso, Ana C. A.; Casal, Susana; Peres, António M., Olive oil total phenolic contents and sensory sensations trends during oven and microwave heating processes and their discrimination using an electronic tongue. Journal of Food Quality, 2018(7826428), 2018
Abstract(s)Olive oil has unique organoleptic attributes and its consumption is associated with nutritional and health benefits, which are mainly related to its rich composition in phenolic and volatile compounds. The use of olive oil in heat-induced cooking leads to deep reduction of phenolic and volatile concentrations and to changes of the sensory profiles. This work confirmed that oven and microwave heating significantly reduced total phenolic contents (value < 0.0001, one-way ANOVA), more pronounced in the latter, together with a significant reduction of the intensity of fruity, sweet, bitter, pungent, and green attributes (value < 0.0001, Kruskal-Wallis test), particularly for fruity and green sensations. Besides, bitter, fruity, green, and pungent intensities showed a linear dependency with the total phenolic contents (-Pearson 0.9694). Finally, the potentiometric electronic tongue together with linear discriminant analysis-simulated annealing algorithm allowed satisfactory discrimination (sensitivities of %, for repeated -fold cross-validation) of olive oils subjected to intense microwave heating (510min, 160205°C) from those processed under usual cooking conditions (oven heating during 1560min or microwave heating during 1.53min, 72165°C). This could be due to the different responses of the electronic tongue towards olive oils with diverse phenolic and sensory profiles.
TypeArticle
URIhttps://hdl.handle.net/1822/52890
DOI10.1155/2018/7826428
ISSN0146-9428
e-ISSN1745-4557
Publisher versionhttp://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1745-4557
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

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