Utilize este identificador para referenciar este registo: http://hdl.handle.net/10198/14055
Título: Quantification of table olives' acid, bitter and salty tastes using potentiometric electronic tongue fingerprints
Autor: Marx, Ítala
Rodrigues, Nuno
Dias, L.G.
Veloso, Ana C.A.
Pereira, J.A.
Drunkler, Deisy A.
Peres, António M.
Palavras-chave: Table olives
Basic taste intensity
Electronic tongue
Linear discriminant analysis
Multiple linear regression
Data: 2017
Citação: Marx, Ítala Maria Gouveia; Rodrigues, Nuno; Dias, L.G.; Veloso, Ana C.A.; Pereira, J.A.; Drunkler, Deisy A.; Peres, António M. (2017) - Quantification of table olives' acid, bitter and salty tastes using potentiometric electronic tongue fingerprints. LWT - Food Science and Technology. ISSN 0023-6438. 79, p. 394-401
Resumo: The intensities of the gustatory attributes of table olives is one of the sensory set of parameters evaluated by trained sensory panels accordingly to the recommendations of the International Olive Council. However this is an expensive and time-consuming process that only allows the evaluation of a limited number of samples per day. So, an electronic tongue coupled with multivariate statistical tools, is proposed for assessing the median intensities of acid, bitter and salty tastes perceived in table olives. The results showed that the device, coupled with linear discriminant analysis, could be used as a taste sensor, allowing classifying aqueous standard solutions according to the three basic tastes (repeated K-fold cross-validation: 98% ± 3% of correct classifications) based on the electrochemical signals of 5 sensors. It was demonstrated that the taste sensor with multiple linear regression models, enabled quantifying the median intensities of the three basic tastes (repeated K-fold cross-validation: R2 0.96 ± 0.04) perceived in table olives by a trained sensory panel, based on the potentiometric fingerprints (21e25 signal profiles) of aqueous olive pastes and brines. The overall satisfactory results showed the electronic tongue potential to assess the intensities of gustatory attributes of table olives, formerly only achievable by sensory panels.
Peer review: yes
URI: http://hdl.handle.net/10198/14055
DOI: 10.1016/j.lwt.2017.01.060
Aparece nas colecções:CIMO - Artigos em Revistas Indexados à WoS/Scopus

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