Ana C.A. Veloso

Prof. Dr. Ana C.A. Veloso

orcid

Research Focus & Metrics

Academic Career Length

25Years (2002-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 February 2009 in Sensors and Actuators B: Chemical
Verified
Journal Article
Closed access
Luís G DiasLuís G Dias
Luís G Dias
António PeresAntónio Peres
António Peres
AVAna C.A. Veloso
Ana C.A. Veloso
Filipa S. ReisFilipa S. Reis
Filipa S. Reis
Miguel Vilas-BoasMiguel Vilas-Boas
Miguel Vilas-Boas
AMA.A.S.C. Machado
A.A.S.C. Machado

1 October 2014 in Food Chemistry
Verified
Journal Article
Closed access
Luís G DiasLuís G Dias
Luís G Dias
AFAndreia Fernandes
Andreia Fernandes
AVAna C.A. Veloso
Ana C.A. Veloso
AMAdélio A.S.C. Machado
Adélio A.S.C. Machado
José Alberto PereiraJosé Alberto Pereira
José Alberto Pereira
António PeresAntónio Peres
António Peres


1 January 2016 in Talanta
Verified
Journal Article
Open access
AVAna C.A. Veloso
Ana C.A. Veloso
Luís G DiasLuís G Dias
Luís G Dias
Nuno RodriguesNuno Rodrigues
Nuno Rodrigues
José Alberto PereiraJosé Alberto Pereira
José Alberto Pereira
António PeresAntónio Peres
António Peres
Olive oils may be commercialized as intense, medium or light, according to the intensity perception of fruitiness, bitterness and pungency attributes, assessed by a sensory panel. In this work, the capability of an electronic tongue to correctly classify olive oils according to the sensory intensity perception levels was evaluated. Cross-sensitivity and non-specific lipid polymeric membranes were used as sensors. The sensor device was firstly tested using quinine monohydrochloride standard solutions. Mean sensitivities of 14±2 to 25±6 mV/decade, depending on the type of plasticizer used in the lipid membranes, were obtained showing the device capability for evaluating bitterness. Then, linear discriminant models based on sub-sets of sensors, selected by a meta-heuristic simulated annealing algorithm, were established enabling to correctly classify 91% of olive oils according to their intensity sensory grade (leave-one-out cross-validation procedure). This capability was further evaluated using a repeated K-fold cross-validation procedure, showing that the electronic tongue allowed an average correct classification of 80% of the olive oils used for internal-validation. So, the electronic tongue can be seen as a taste sensor, allowing differentiating olive oils with different sensory intensities, and could be used as a preliminary, complementary and practical tool for panelists during olive oil sensory analysis.

1 October 2014 in Talanta
Verified
Journal Article
Closed access
MSMara E.B.C. Sousa
Mara E.B.C. Sousa
Luís G DiasLuís G Dias
Luís G Dias
AVAna C.A. Veloso
Ana C.A. Veloso
Leticia M. EstevinhoLeticia M. Estevinho
Leticia M. Estevinho
António PeresAntónio Peres
António Peres
AMAdélio A.S.C. Machado
Adélio A.S.C. Machado

1 November 2016 in LWT
Verified
Journal Article
Closed access
Nuno RodriguesNuno Rodrigues
Nuno Rodrigues
Luís G DiasLuís G Dias
Luís G Dias
AVAna C.A. Veloso
Ana C.A. Veloso
José Alberto PereiraJosé Alberto Pereira
José Alberto Pereira
António PeresAntónio Peres
António Peres