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Title
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Authentication of PDO paprika powder (Pimenton de la Vera) by multivariate analysis of the elemental fingerprint determined by ED-XRF : a feasibility study
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Author
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Abstract
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| Products with a Protected Denomination of Origin (PDO) are vulnerable to misdescription of their true geographical origin. In this work a method has been developed that allows the authentication of La Vera paprika powder (Pimenton de la Vera), a PDO product from the central-west Spanish region, Extremadura. The mass fractions of Br, Ca, Cr, Cl, Cu, Fe, K, Mn, Ni, P, Rb, S, Sr and Zn determined by energy dispersive X-ray fluo-rescence (ED-XRF) are used for classification purposes by multivariate analysis using Soft Independent Modelling of Class Analogy (SIMCA) (PCA-Class) and Partial Least Square-Discriminant Analysis (PLS-DA). Sixty-seven paprika samples purchased in supermarkets around Europe and on-line via the official web-site of Pimenton de La Vera, were used to build up the models for prediction purposes. The PCA-class model of La Vera paprika powder had a sensitivity of 82%, a specificity of 100% and an accuracy of 91%, whereas the PLS-DA model had a sensitivity of 100%, a specificity of 91% and an accuracy of 96%. |
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Language
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English
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Source (journal)
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Food control. - Guildford
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Publication
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Guildford
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2021
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ISSN
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0956-7135
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DOI
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10.1016/J.FOODCONT.2020.107496
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Volume/pages
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120
(2021)
, 10 p.
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Article Reference
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107496
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ISI
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000579185600008
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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