Publication Type Journal Article
Title Detection and Identification of Extra Virgin Olive Oil Adulteration by GC-MS Combined with Chemometrics
Authors Yang Yang Miguel Duarte Ferro Isabel Cavaco Yizeng Liang
Groups
Journal JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Year 2013
Month April
Volume 61
Number 15
Pages 3693-3702
Abstract In this study, an analytical method for the detection and identification of extra virgin olive oil adulteration with four types of oils (corn, peanut, rapeseed, and sunflower oils) was proposed. The variables under evaluation included 22 fatty acids and 6 other significant parameters (the ratio of linoleic/linolenic acid, oleic/linoleic acid, total saturated fatty acids (SFAs), polyunsaturated fatty acids (PUFAs), monounsaturated fatty acids (MUFAs), MUFAs/PUFAs). Univariate analyses followed by multivariate analyses were applied to the adulteration investigation. As a result, the univariate analyses demonstrated that higher contents of eicosanoic acid, docosanoic acid, tetracosanoic acid, and SFAs were the peculiarities of peanut adulteration and higher levels of linolenic acid, 11-eicosenoic acid, erucic acid, and nervonic acid the characteristics of rapeseed adulteration. Then, PLS-LDA made the detection of adulteration effective with a 1\% detection limit and 90\% prediction ability; a Monte Carlo tree identified the type of adulteration with 85\% prediction ability.
DOI http://dx.doi.org/10.1021/jf4000538
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Publisher
Book Title
ISSN 0021-8561
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Conference Name
Bibtex ID ISI:000317872700015
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