Prediction of parameters related to grape ripening by multivariate calibration of voltammetric signals acquired by an electronic tongue

L. Pigani, G. Vasile Simone, G. Foca, A. Ulrici, F. Masino, L. Cubillana-Aguilera, R. Calvini, R. Seeber

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

An electronic tongue (ET) consisting of two voltammetric sensors, namely a poly-ethylendioxythiophene modified Pt electrode and a sonogel carbon electrode, has been developed aiming at monitoring grape ripening. To test the effectiveness of device and measurement procedures developed, samples of three varieties of grapes have been collected from veraison to harvest of the mature grape bunches. The derived musts have been then submitted to electrochemical investigation using Differential Pulse Voltammetry technique. At the same time, quantitative determination of specific analytical parameters for the evaluation of technological and phenolic maturity of each sample has been performed by means of conventional analytical techniques. After a preliminary inspection by principal component analysis, calibration models were calculated both by partial least squares (PLS) on the whole signals and by the interval partial least squares (iPLS) variable selection algorithm, in order to estimate physico-chemical parameters. Calibration models have been obtained both considering separately the signals of each sensor of the ET, and by proper fusion of the voltammetric data selected from the two sensors by iPLS. The latter procedure allowed us to check the possible complementarity of the information brought by the different electrodes. Good predictive models have been obtained for estimation of pH, total acidity, sugar content, and anthocyanins content. The application of the ET for fast evaluation of grape ripening and of most suitable harvesting time is proposed.

Original languageEnglish
Pages (from-to)178-187
Number of pages10
JournalTalanta
Volume178
DOIs
Publication statusPublished - Feb 1 2018
Externally publishedYes

Fingerprint

Electronic tongues
Electronic Nose
Vitis
Calibration
Least-Squares Analysis
Electrodes
Sensors
Anthocyanins
Voltammetry
Acidity
Sugars
Principal component analysis
Fusion reactions
Carbon
Principal Component Analysis
Inspection
Monitoring
Equipment and Supplies

Keywords

  • Data fusion
  • Electronic tongue
  • Grape ripening
  • Partial least squares regression
  • Variable selection
  • Voltammetric sensors

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemistry(all)
  • Biochemistry
  • Spectroscopy

Cite this

Pigani, L., Vasile Simone, G., Foca, G., Ulrici, A., Masino, F., Cubillana-Aguilera, L., ... Seeber, R. (2018). Prediction of parameters related to grape ripening by multivariate calibration of voltammetric signals acquired by an electronic tongue. Talanta, 178, 178-187. https://doi.org/10.1016/j.talanta.2017.09.027

Prediction of parameters related to grape ripening by multivariate calibration of voltammetric signals acquired by an electronic tongue. / Pigani, L.; Vasile Simone, G.; Foca, G.; Ulrici, A.; Masino, F.; Cubillana-Aguilera, L.; Calvini, R.; Seeber, R.

In: Talanta, Vol. 178, 01.02.2018, p. 178-187.

Research output: Contribution to journalArticle

Pigani, L, Vasile Simone, G, Foca, G, Ulrici, A, Masino, F, Cubillana-Aguilera, L, Calvini, R & Seeber, R 2018, 'Prediction of parameters related to grape ripening by multivariate calibration of voltammetric signals acquired by an electronic tongue', Talanta, vol. 178, pp. 178-187. https://doi.org/10.1016/j.talanta.2017.09.027
Pigani, L. ; Vasile Simone, G. ; Foca, G. ; Ulrici, A. ; Masino, F. ; Cubillana-Aguilera, L. ; Calvini, R. ; Seeber, R. / Prediction of parameters related to grape ripening by multivariate calibration of voltammetric signals acquired by an electronic tongue. In: Talanta. 2018 ; Vol. 178. pp. 178-187.
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