Journal of the American Oil Chemists' Society

, Volume 88, Issue 5, pp 639–645

Classification of Turkish Extra Virgin Olive Oils by a SAW Detector Electronic Nose

Original Paper

DOI: 10.1007/s11746-010-1705-8

Cite this article as:
Kadiroğlu, P., Korel, F. & Tokatlı, F. J Am Oil Chem Soc (2011) 88: 639. doi:10.1007/s11746-010-1705-8

Abstract

An electronic nose (e-nose), in combination with chemometrics, has been used to classify the cultivar, harvest year, and geographical origin of economically important Turkish extra virgin olive oils. The aroma fingerprints of the eight different olive oil samples [Memecik (M), Erkence (E), Gemlik (G), Ayvalık (A), Domat (D), Nizip (N), Gemlik–Edremit (GE), Ayvalık–Edremit (AE)] were obtained using an e-nose consisting a surface acoustic wave detector. Data were analyzed by principal component analysis (PCA) and discriminant function analysis (DFA). Classification of cultivars using PCA revealed that A class model was correctly discriminated from N in two harvest years. The DFA classified 100 and 97% of the samples correctly according to the cultivar in the 1st and 2nd harvest years, respectively. Successful separation among the harvest years and geographical origins were obtained. Sensory analyses were performed for determining the differences in the geographical origin of the olive oils and the preferences of the panelists. The panelists could not detect the differences among olive oils from two different regions. The cultivar, harvest year, and geographical origin of extra virgin olive oils could be discriminated successfully by the e-nose.

Keywords

Extra virgin olive oilElectronic noseClassificationPrincipal component analysisDiscriminant function analysisSensory analysis

Copyright information

© AOCS 2010

Authors and Affiliations

  • Pınar Kadiroğlu
    • 1
  • Figen Korel
    • 1
  • Figen Tokatlı
    • 1
  1. 1.Department of Food Engineeringİzmir Institute of TechnologyUrlaTurkey