✦ LIBER ✦

Geographical classification of olive oils by the application of CART and SVM to their FT-IR

✍ Scribed by Sónia Caetano; Bülent Üstün; Siobhán Hennessy; Johanna Smeyers-Verbeke; Willem Melssen; Gérard Downey; Lutgarde Buydens; Yvan Vander Heyden

Publisher: John Wiley and Sons
Year: 2007
Tongue: English
Weight: 252 KB
Volume: 21
Category: Article
ISSN: 0886-9383
DOI: 10.1002/cem.1077

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

This paper reports the application of Fourier‐transform infrared (FT‐IR) spectroscopy to the geographical classification of extra virgin olive oils. Two chemometrical techniques, classification and regression trees (CART) and support vector machines (SVM) based on the Gaussian kernel and the recently introduced Euclidean distance‐based Pearson VII Universal Kernel (PUK), were applied to discriminate between Italian and non‐Italian and between Ligurian and non‐Ligurian olive oils. The PUK is applied in literature with success on regression problems. In this paper the mapping power of this universal kernel for classification was investigated. In this study it was observed that SVM performed better than CART. SVM based on the PUK provide models with a high selectivity and sensitivity (thus a better accuracy) as compared to those obtained using the Gaussian kernel. The wave numbers selected in the classification trees were interpreted demonstrating that the trees were chemically justified. This study also shows that FT‐IR spectroscopy associated with SVM and CART can be used to correctly discriminate between various origins of olive oils, demonstrating that the combination of techniques might be a powerful tool for supporting the claimed origin of olive oils. Copyright © 2007 John Wiley & Sons, Ltd.

📜 SIMILAR VOLUMES

Classification of French red wines accor

Classification of French red wines according to their geographical origin by the use of multivariate analyses

✍ Sivertsen, Hanne K; Holen, Borge; Nicolaysen, Frithjof; Risvik, Einar 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 144 KB 👁 2 views

The aim of this study was to obtain detailed descriptions and to classify 22 red wines from four main wine regions in France based on both sensory and chemical analyses. The chemical data included major acids, alcohols, esters, pH, total phenols and colour. Seventeen attributes were included in the

Determination of betaines in vegetable o

Determination of betaines in vegetable oils by capillary electrophoresis tandem mass spectrometry – application to the detection of olive oil adulteration with seed oils

✍ Laura Sánchez-Hernández; María Castro-Puyana; María Luisa Marina; Antonio L. Cre 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 306 KB 👁 2 views

Fuel oils and their applications. An int

Fuel oils and their applications. An introductory treatise on the sources, classification, and production of fuel oils, with notes on colloidal fuels. By H. V. Mitchell. Second edition, revised by A. Grounds, B.Sc. Pp. xii+170. London: Sir Isaac Pitman & Sons, 1930. 5s

📂 Article 📅 1931 🏛 Wiley (John Wiley & Sons) ⚖ 139 KB 👁 1 views

arresting, espositioii. \\'hen ~I I I ililtlior CiiIi teach US R scicncc so engiging!y Iic niny bc: forgimi niuch-even the spdling of \*. tl~plitliong I' \vitli one " 11," iind of " dwclling '' with t h e e '' 1's"' The I)ooli is one wl~ich most clicniists v-oild rend with pleasure, i i n d one ~rh