Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2060
Title: Differentiation of mixtures of monovarietal olive oils by mid-infrared spectroscopy and chemometrics
Authors: Gürdeniz, Gözde
Tokatlı, Figen
Özen, Fatma Banu
Gürdeniz, Gözde
Tokatlı, Figen
Özen, Fatma Banu
Izmir Institute of Technology. Food Engineering
Keywords: Adulteration
Chemometrics
FTIR
Olive oil
Issue Date: 2007
Publisher: John Wiley and Sons Inc.
Source: Gürdeniz, G., Tokatlı, F., and Özen, F. B. (2007). Differentiation of mixtures of monovarietal olive oils by mid-infrared spectroscopy and chemometrics. European Journal of Lipid Science and Technology, 109(12), 1194-1202. doi:10.1002/ejlt.200700087
Abstract: Fourier transform infrared (FT-IR) spectroscopy in combination with chemometric techniques has become a useful tool for authenticity determination of extra-virgin olive oils. Spectroscopic analysis of monovarietal extra-virgin olive oils obtained from three different olive cultivars (Erkence, Ayvalik and Nizip) and mixtures (Erkence-Nizip and Ayvalik-Nizip) of monovarietal olive oils was performed with an FT-IR spectrometer equipped with a ZnSe attenuated total reflection sample accessory and a deuterated tri-glycine sulfate detector. Using spectral data, principal component analysis successfully classified each cultivar and differentiated the mixtures from pure mono-varietal oils. Quantification of two different monovarietal oil mixtures (2-20%) is achieved using partial least square (PLS) regression models. Correlation coefficients (R2) of the proposed PLS regression models are 0.94 and 0.96 for the Erkence-Nizip and Ayvalik-Nizip mixtures, respectively. Cross-validation was applied to check the goodness of fit for the PLS regression models, and R 2 of the cross-validation was determined as 0.84 and 0.91, respectively, for the two mixtures.
URI: http://doi.org/10.1002/ejlt.200700087
http://hdl.handle.net/11147/2060
ISSN: 1438-7697
1438-7697
Appears in Collections:Food Engineering / Gıda Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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