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Non-destructive fluorescence spectroscopy combined with second-order calibration as a new strategy for the analysis of the illegal Sudan I dye in paprika powder

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dc.contributor.authorEskildsen, Carl Emil
dc.contributor.authorMuñoz de la Peña, Arsenio
dc.contributor.authorGaleano Díaz, Teresa
dc.contributor.authorWold, Jens Petter
dc.contributor.authorMonago Maraña, Olga
dc.date.accessioned2024-05-20T11:17:40Z
dc.date.available2024-05-20T11:17:40Z
dc.date.issued2020-05
dc.description.abstractThis paper presents a novel strategy for determination of the illegal dye Sudan I in paprika powder. The method is based on fluorescence spectroscopy combined with second-order calibration, which was employed for the first time for this purpose. The method is non-destructive and requires no sample preparation. It was probed that Sudan I exhibited fluorescence; however, the color of paprika samples affected the signal and it was not possible to quantify this adulterant by means of univariate and first-order calibration. To model the effect of variability of color in samples, a central composite experimental design was performed with varying ASTA (American Spices Trade Association) color values and Sudan I concentrations. Different second-order algorithms were tried for quantification. The best results for calibration and validation were obtained from Unfolded-Partial Least-Squares (U-PLS) and Multi-way Partial Least-Squares (N-PLS). The level of detection ranges were 0.4 – 3 mg/g and 0.5 – 3 mg/g for U-PLS and N-PLS, respectively. This was lower than other methods found in the literature.en
dc.description.versionversión final
dc.identifier.doihttps://doi.org/10.1016/j.microc.2019.104539
dc.identifier.issn0026-265X; eISSN 1095-9149
dc.identifier.urihttps://hdl.handle.net/20.500.14468/11557
dc.journal.issue8
dc.journal.titleMicrochemical Journal
dc.journal.volume154
dc.language.isoen
dc.publisherElsevier
dc.relation.centerFacultad de Ciencias
dc.relation.departmentCiencias Analíticas
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0
dc.subject.keywordsPaprika powder
dc.subject.keywordsFluorescence spectroscopy
dc.subject.keywordsNon-destructive analysis
dc.subject.keywordsSecond-order calibration
dc.subject.keywordsSudan I
dc.subject.keywordsU-PLS/RBL
dc.titleNon-destructive fluorescence spectroscopy combined with second-order calibration as a new strategy for the analysis of the illegal Sudan I dye in paprika powderes
dc.typejournal articleen
dc.typeartículoes
dspace.entity.typePublication
relation.isAuthorOfPublicationee9ceafc-e763-4814-87ae-e2bb2b43d660
relation.isAuthorOfPublication.latestForDiscoveryee9ceafc-e763-4814-87ae-e2bb2b43d660
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