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Geographic classification of extra virgin olive oils from the eastern Mediterranean by chemometric analysis of visible and near-infrared spectroscopic data.
Appl Spectrosc. 2003 Feb; 57(2):158-63.AS

Abstract

Visible and near-infrared reflectance spectra have been examined for their ability to classify extra virgin olive oils from the eastern Mediterranean on the basis of their geographic origin. Classification strategies investigated were partial least-squares regression, factorial discriminant analysis, and k-nearest neighbors analysis. Discriminant models were developed and evaluated using spectral data in the visible (400-750 nm), near-infrared (1100-2498 nm), and combined (400-2498 nm) wavelength ranges. A variety of data pretreatments was applied. Best results were obtained using factorial discriminant analysis on raw spectral data over the combined wavelength range; a correct classification rate of 93.9% was obtained on a prediction sample set. Though the overall sample set was limited in numbers, these results demonstrate the potential of near-infrared spectroscopy to classify extra virgin olive oils on the basis of their geographic origin.

Authors+Show Affiliations

Teagasc, National Food Centre, Ashtown, Dublin 15, Ireland.No affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Evaluation Study
Journal Article
Research Support, Non-U.S. Gov't
Validation Study

Language

eng

PubMed ID

14610952

Citation

Downey, Gerard, et al. "Geographic Classification of Extra Virgin Olive Oils From the Eastern Mediterranean By Chemometric Analysis of Visible and Near-infrared Spectroscopic Data." Applied Spectroscopy, vol. 57, no. 2, 2003, pp. 158-63.
Downey G, McIntyre P, Davies AN. Geographic classification of extra virgin olive oils from the eastern Mediterranean by chemometric analysis of visible and near-infrared spectroscopic data. Appl Spectrosc. 2003;57(2):158-63.
Downey, G., McIntyre, P., & Davies, A. N. (2003). Geographic classification of extra virgin olive oils from the eastern Mediterranean by chemometric analysis of visible and near-infrared spectroscopic data. Applied Spectroscopy, 57(2), 158-63.
Downey G, McIntyre P, Davies AN. Geographic Classification of Extra Virgin Olive Oils From the Eastern Mediterranean By Chemometric Analysis of Visible and Near-infrared Spectroscopic Data. Appl Spectrosc. 2003;57(2):158-63. PubMed PMID: 14610952.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Geographic classification of extra virgin olive oils from the eastern Mediterranean by chemometric analysis of visible and near-infrared spectroscopic data. AU - Downey,Gerard, AU - McIntyre,Peter, AU - Davies,Antony N, PY - 2003/11/13/pubmed PY - 2004/1/21/medline PY - 2003/11/13/entrez SP - 158 EP - 63 JF - Applied spectroscopy JO - Appl Spectrosc VL - 57 IS - 2 N2 - Visible and near-infrared reflectance spectra have been examined for their ability to classify extra virgin olive oils from the eastern Mediterranean on the basis of their geographic origin. Classification strategies investigated were partial least-squares regression, factorial discriminant analysis, and k-nearest neighbors analysis. Discriminant models were developed and evaluated using spectral data in the visible (400-750 nm), near-infrared (1100-2498 nm), and combined (400-2498 nm) wavelength ranges. A variety of data pretreatments was applied. Best results were obtained using factorial discriminant analysis on raw spectral data over the combined wavelength range; a correct classification rate of 93.9% was obtained on a prediction sample set. Though the overall sample set was limited in numbers, these results demonstrate the potential of near-infrared spectroscopy to classify extra virgin olive oils on the basis of their geographic origin. SN - 0003-7028 UR - https://www.unboundmedicine.com/medline/citation/14610952/Geographic_classification_of_extra_virgin_olive_oils_from_the_eastern_Mediterranean_by_chemometric_analysis_of_visible_and_near_infrared_spectroscopic_data_ L2 - https://journals.sagepub.com/doi/10.1366/000370203321535060?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -