Potential of Fourier Transform Infrared Spectroscopy for the Authentication of Vegetable Oils

Yoke W. Lai, E. Katherine Kemsley, Reginald H. Wilson

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175 Citations (Scopus)


Fourier transform infrared (FTIR) spectroscopy was used in conjunction with principal component analysis (PCA) and discriminant analysis to investigate the potential of the technique for determining the authenticity of vegetable oils. PCA applied to spectra from a range of seed oils revealed clustering according to plant species. When extra virgin and refined olive oils were subjected to discriminant analysis, 93% of samples in a calibration set and 100% of samples in an independent validation set were correctly classified, despite these two types of oil being chemically and spectroscopically very similar. The method, therefore, has potential as a rapid method for the determination of product authenticity.

Original languageEnglish
Pages (from-to)1154-1159
Number of pages6
JournalJournal of Agricultural and Food Chemistry
Issue number5
Publication statusPublished - 1 May 1994

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