126386 20241125101123.0 doi 10.3390/app13095533 sideral 133893 ART-2023-133893 eng Wrona, Magdalena Universidad de Zaragoza (orcid)0000-0003-2052-3012 Innovative surface-enhanced raman spectroscopy method as a fast tool to assess the oxidation of lipids in ground pork 2023 Access copy available to the general public Unrestricted A novel method for the determination of lipid oxidation using Raman microscopy was developed. A home-made surface-enhanced Raman spectroscopy (SERS) substrate based on silver nanoparticles deposited on a glass Petri dish was used. The degradation of ground pork stored at 5 °C was monitored for 16 days. Two packages were considered: an active packaging containing an oregano extract with antioxidant properties and a conventional one consisting of a low-density polyethylene (LDPE) film. The lipid fraction of the ground pork was extracted with a mixture of diethyl ether/n-hexane (1:1). A remarkable maximum signal enhancement factor of 1.64 × 107 at 1439 cm−1 shift (and up to 8.58 × 106 at 1655 cm−1, chosen for fat oxidation assessment) was obtained with SERS compared to conventional Raman. In addition, SERS provided better discrimination among samples than the results obtained by the thiobarbituric acid reactive substances (TBARS) method. The experimental conditions for SERS were optimized and discussed. info:eu-repo/grantAgreement/ES/DGA-FSE/T53-20R info:eu-repo/grantAgreement/ES/MEC/FPU-AP2012-2716 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 2.5 2023 ENGINEERING, MULTIDISCIPLINARY 44 / 181 = 0.243 2023 Q1 T1 PHYSICS, APPLIED 87 / 179 = 0.486 2023 Q2 T2 CHEMISTRY, MULTIDISCIPLINARY 115 / 231 = 0.498 2023 Q2 T2 MATERIALS SCIENCE, MULTIDISCIPLINARY 258 / 439 = 0.588 2023 Q3 T2 0.508 2023 Engineering (miscellaneous) 2023 Q2 Fluid Flow and Transfer Processes 2023 Q2 Materials Science (miscellaneous) 2023 Q2 Instrumentation 2023 Q2 Process Chemistry and Technology 2023 Q3 Computer Science Applications 2023 Q3 5.3 2023 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Lours, Juliette Salafranca, Jesús Universidad de Zaragoza (orcid)0000-0002-6607-1309 Joly, Catherine Nerín, Cristina Universidad de Zaragoza (orcid)0000-0003-2685-5739 2009 750 Universidad de Zaragoza Dpto. Química Analítica Área Química Analítica 13, 9 (2023), 5533 [13 pp. ] Appl. sci. Applied Sciences (Switzerland) 2076-3417 3589197 http://zaguan.unizar.es/record/126386/files/texto_completo.pdf Versión publicada 2695143 http://zaguan.unizar.es/record/126386/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:126386 articulos driver 2024-11-22-11:57:04 ARTICLE