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Non-destructive Raman spectroscopy as a tool for measuring ASTA color values and Sudan I content in paprika powder

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dc.contributor.authorEskildsen, Carl Emil
dc.contributor.authorAfseth, Nils Kristian
dc.contributor.authorGaleano Díaz, Teresa
dc.contributor.authorMuñoz de la Peña, Arsenio
dc.contributor.authorWold, Jens Petter
dc.contributor.authorMonago Maraña, Olga
dc.date.accessioned2024-05-20T11:17:42Z
dc.date.available2024-05-20T11:17:42Z
dc.date.issued2019-02-15
dc.description.abstractThe aim of this study was developing a non-destructive method for the determination of color in paprika powder as well as for detecting possible adulteration with Sudan I. Non-destructive Raman spectroscopy was applied directly to paprika powder employing a laser excitation of 785 nm for the first time. The fluorescence background was estimated, by fitting a polynomial to each spectrum, and then subtracted. After preprocessing the spectra, some peaks were clearly identified as characteristic from pigments present in paprika. The preprocessed Raman spectra were correlated with the ASTA color values of paprika by partial least squares regression (PLSR). Twenty-five paprika samples were adulterated with Sudan I at different levels and the PLSR model was also obtained. The coefficients of determination (R2) were 0.945 and 0.982 for ASTA and Sudan I concentration, respectively, and the root mean square errors of prediction (RMSEP) were 8.8 ASTA values and 0.91 mg/g, respectively. Finally, different approaches were applied to discriminate between adulterated and non-adulterated samples. Best results were obtained for partial least squares – discriminant analysis (PLS-DA), allowing a good discrimination when the adulteration with Sudan I was higher than 0.5%.en
dc.description.versionversión final
dc.identifier.doihttps://doi.org/10.1016/j.foodchem.2018.08.129
dc.identifier.issn0308-8146
dc.identifier.urihttps://hdl.handle.net/20.500.14468/11559
dc.journal.issue12
dc.journal.titleFood Chemistry
dc.journal.volume274
dc.language.isoen
dc.publisherElsevier
dc.relation.centerFacultades y escuelas::Facultad de Ciencias
dc.relation.departmentCiencias Analíticas
dc.rightsAtribución-NoComercial-SinDerivadas 4.0 Internacional
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0
dc.subject.keywordsASTA values
dc.subject.keywordsSudan I
dc.subject.keywordsPartial least-squares regression
dc.subject.keywordsPartial least-squares
dc.subject.keywordsdiscriminant-analysis
dc.subject.keywordsU-PLS/RBL
dc.titleNon-destructive Raman spectroscopy as a tool for measuring ASTA color values and Sudan I content in paprika powderes
dc.typeartículoes
dc.typejournal articleen
dspace.entity.typePublication
person.familyNameMonago Maraña
person.givenNameOlga
relation.isAuthorOfPublicationee9ceafc-e763-4814-87ae-e2bb2b43d660
relation.isAuthorOfPublication.latestForDiscoveryee9ceafc-e763-4814-87ae-e2bb2b43d660
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