Author, as appears in the article.: Fort, Aina; Ruisanchez, Itziar; Pilar Callao, M.;

Department: Química Analítica i Química Orgànica

URV's Author/s: Callao Lasmarias, María Pilar / Ruisanchez Capelastegui, María Iciar

Keywords: Variable selection Soybean oil Raman-spectroscopy Quantification Qualitative-analysis Pls_da Ft-raman Food authentication Fluorescence Extra-virgin olive oil Data fusion Cultivar Classification Adulteration

Abstract: This paper proposes using multivariate methodology to authenticate the geographical origin of monovarietal Arbequina extra virgin olive oils from two geographically adjacent Catalan PDOs (protected designations of origin). Two spectroscopic techniques, fluorescence and FT-Raman were used to obtain multivariate data. The results obtained by principal component analysis (PCA), partial least squares-discriminant analysis (PLS-DA) and low and high-data fusion are discussed. The training and test samples were randomly chosen. To obtain greater representativeness in the results, the data set was independently divided three times. Thus, three different training and test sets were obtained and used to build independent classification models and carry out data fusion strategies. When the two fusion strategies were applied, the performance parameters (sensitivity and specificity) were better than when they were applied individually, which indicates that synergies between FT-Raman and fluorescence expand the information about the samples. It was also observed that the influence on the results of the type of data set obtained by the random division of the data set was minimized.

Thematic Areas: Spectroscopy Saúde coletiva Química Odontología Nutrição Medicina ii Medicina i Materiais Interdisciplinar Geociências Farmacia Engenharias iv Engenharias iii Engenharias ii Engenharias i Enfermagem Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Chemistry, analytical Biotecnología Biodiversidade Astronomia / física Analytical chemistry Administração pública e de empresas, ciências contábeis e turismo

licence for use: https://creativecommons.org/licenses/by/3.0/es/

Author's mail: itziar.ruisanchez@urv.cat mariapilar.callao@urv.cat

Author identifier: 0000-0002-7097-3583 0000-0003-2691-329X

Record's date: 2023-02-19

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://www.sciencedirect.com/science/article/pii/S0026265X21006974?via%3Dihub

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Microchemical Journal. 169

APA: Fort, Aina; Ruisanchez, Itziar; Pilar Callao, M.; (2021). Chemometric strategies for authenticating extra virgin olive oils from two geographically adjacent Catalan protected designations of origin. Microchemical Journal, 169(), -. DOI: 10.1016/j.microc.2021.106611

Article's DOI: 10.1016/j.microc.2021.106611

Entity: Universitat Rovira i Virgili

Journal publication year: 2021

Publication Type: Journal Publications