2026-05-24T16:58:38Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/50942021-11-10T09:38:26Zcom_10259_4249com_10259_5086com_10259_2604col_10259_4250

Rubio Martínez, Laura 492 500 Sanllorente Méndez, Silvia 522 500 Sarabia Peinador, Luis Antonio 534 500 Ortiz Fernández, Mª Cruz 406 500 2019-05-20T10:55:06Z 2019-08 2020-09 0308-8146 http://hdl.handle.net/10259/5094 10.1016/j.foodchem.2019.03.113 The determination of cochineal (E-120) in strawberry jam was carried out in the presence of carmoisine (E-122) using the four-way PARAFAC decomposition and excitation-emission fluorescence matrices. In the measured conditions, there was no fluorescence signal for carmoisine due to a strong quenching effect and this colorant also led to a decrease of the fluorescence signal of cochineal. The European Union has fixed a maximum residue level, MRL, for cochineal in jam (100 mg kg−1). Therefore, the addition of other food colorant (carmoisine) in the jam could lead to false compliant decisions. The four-way PARAFAC decomposition avoided false compliant decisions caused by the quenching effect. Cochineal was unequivocally identified. Detection capability (CCβ) was 0.72 mg L−1 for probabilities of false positive and false negative fixed at 0.05. Cochineal was detected in the jam (104.63 mg kg−1) above the MRL. This amount was compared with the one obtained using a HPLC/DAD method. Spanish MINECO (AEI/FEDER, UE) through project CTQ2017‐88894-R and by Junta de Castilla y León through project BU012P17 (all co‐financed with European FEDER funds). application/pdf eng Elsevier Food Chemistry. 2019, V. 290, p. 178-186 https://doi.org/10.1016/j.foodchem.2019.03.113 info:eu-repo/grantAgreement/MINECO/CTQ2017‐88894-R info:eu-repo/grantAgreement/JCyL/BU012P17 Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Cochineal Carmoisine Excitation-emission fluorescence Four-way PARAFAC decomposition Quenching effect Strawberry jam Química analítica Chemistry, Analytic Fluorescence determination of cochineal in strawberry jam in the presence of carmoisine as a quencher by means of four-way PARAFAC decomposition info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 805 https://riubu.ubu.es/bitstream/10259/5094/8/license_rdf 4460e5956bc1d1639be9ae6146a50347 MD5 8 THUMBNAIL Rubio-fc_2019.pdf.jpg Rubio-fc_2019.pdf.jpg IM Thumbnail image/jpeg 4163 https://riubu.ubu.es/bitstream/10259/5094/7/Rubio-fc_2019.pdf.jpg 401402281154c565b485ad45567722fb MD5 7 ORIGINAL Rubio-fc_2019.pdf Rubio-fc_2019.pdf application/pdf 2264996 https://riubu.ubu.es/bitstream/10259/5094/1/Rubio-fc_2019.pdf 86fbbde10ee211dde02f4e89c0511fc7 MD5 1 LICENSE license.txt license.txt text/plain; charset=utf-8 998 https://riubu.ubu.es/bitstream/10259/5094/5/license.txt aa90105e1c90a1b4fe810649aa967b7d MD5 5 TEXT Rubio-fc_2019.pdf.txt Rubio-fc_2019.pdf.txt Extracted text text/plain 49576 https://riubu.ubu.es/bitstream/10259/5094/6/Rubio-fc_2019.pdf.txt 0542a848057fefa0c873ce08241fdabf MD5 6 10259/5094 oai:riubu.ubu.es:10259/5094 2021-11-10 10:38:26.944 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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