Class modeling techniques in the control of the geographical origin of wines

M. Forina, Paolo Oliveri, Henry Jäger, U. Romisch, Johanna Verbeke

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


Wine samples of four different countries: Hungary, Czech Republic, Romania and South-Africa, have been studies within the European project WINES-DB "establishing of a wine data bank for analytical parameters from third countries". For each country two types of wine samples were collected, during three consecutive years: commercial wines and wines obtained by microvinification according to EC regulation N. 2729/2000. The sampling design was organized to represent both the grape varieties and the official wine regions in the four countries. The 1188 wine samples were analyzed for 58 chemical quantities.
Data analysis was performed with special attention to the real problem, namely the control of frauds. Class modeling techniques (UNEQ, SIMCA, MRM) have been applied, to answer to the general question: "Does sample O, stated of class A, really belong to class A?". Two validation strategies, based on cross validation and on an external, representative, evaluation set, have been used to evaluate carefully the predictive performance of the class models.
The results obtained with the four class modeling techniques inficate that for the four countries it is possible to compute models with high efficiency, generally with a reduced number of variables. To obtain efficient models, red and white wines, commercial and microvinification wines, must be considered separately.
The validity of the models is ensured by the representativity of the samples, the appropriate application of techniques of Chemometrics and the validation.
Original languageEnglish
Pages (from-to)127-137
JournalChemometrics and Intelligent Laboratory Systems
Issue number2
Publication statusPublished - 2009


  • Class modeling, SIMCA, UNEQ, MRM, Wine


Dive into the research topics of 'Class modeling techniques in the control of the geographical origin of wines'. Together they form a unique fingerprint.

Cite this