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Laser-Induced Graphene Electrodes Modified with a Molecularly Imprinted Polymer for Detection of Tetracycline in Milk and Meat
dc.contributor.author | Abera, Biresaw D. | |
dc.contributor.author | Ortiz Gómez, Inmaculada | |
dc.contributor.author | Romero Maldonado, Francisco Javier | |
dc.contributor.author | Salinas Castillo, Alfonso | |
dc.contributor.author | Rivadeneyra Torres, Almudena | |
dc.date.accessioned | 2022-02-02T13:25:06Z | |
dc.date.available | 2022-02-02T13:25:06Z | |
dc.date.issued | 2021-12-30 | |
dc.identifier.citation | Abera, B.D... [et al.]. Laser-Induced Graphene Electrodes Modified with a Molecularly Imprinted Polymer for Detection of Tetracycline in Milk and Meat. Sensors 2022, 22, 269. [https://doi.org/10.3390/s22010269] | es_ES |
dc.identifier.uri | http://hdl.handle.net/10481/72625 | |
dc.description | This work was partially supported by the Italian Institute of Technology (IIT). | es_ES |
dc.description | We would like to express our gratitude to R. Cingolani and his group at IIT, as well as to the other Sensing Technology Group Members at the Free University of Bolzano. This work was partially supported by the BBVA foundation through the 2019 Leonardo Grant for Researchers and Cultural Creators. | es_ES |
dc.description.abstract | Tetracycline (TC) is a widely known antibiotic used worldwide to treat animals. Its residues in animal-origin foods cause adverse health effects to consumers. Low-cost and real-time measuring systems of TC in food samples are, therefore, extremely needed. In this work, a three-electrode sensitive and label-free sensor was developed to detect TC residues from milk and meat extract samples, using CO2 laser-induced graphene (LIG) electrodes modified with gold nanoparticles (AuNPs) and a molecularly imprinted polymer (MIP) used as a synthetic biorecognition element. LIG was patterned on a polyimide (PI) substrate, reaching a minimum sheet resistance (R-sh) of 17.27 +/- 1.04 omega/sq. The o-phenylenediamine (oPD) monomer and TC template were electropolymerized on the surface of the LIG working electrode to form the MIP. Surface morphology and electrochemical techniques were used to characterize the formation of LIG and to confirm each modification step. The sensitivity of the sensor was evaluated by differential pulse voltammetry (DPV), leading to a limit of detection (LOD) of 0.32 nM, 0.85 nM, and 0.80 nM in buffer, milk, and meat extract samples, respectively, with a working range of 5 nM to 500 nM and a linear response range between 10 nM to 300 nM. The sensor showed good LOD (0.32 nM), reproducibility, and stability, and it can be used as an alternative system to detect TC from animal-origin food products. | es_ES |
dc.description.sponsorship | Italian Institute of Technology (IIT) | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.rights | Atribución 3.0 España | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | Laser-induced graphene | es_ES |
dc.subject | Antibiotic residue | es_ES |
dc.subject | Tetracycline | es_ES |
dc.subject | Molecularly imprinted polymer | es_ES |
dc.subject | Milk | es_ES |
dc.subject | Meat | es_ES |
dc.subject | Flexible | es_ES |
dc.subject | Electrochemical sensor | es_ES |
dc.title | Laser-Induced Graphene Electrodes Modified with a Molecularly Imprinted Polymer for Detection of Tetracycline in Milk and Meat | es_ES |
dc.type | journal article | es_ES |
dc.rights.accessRights | open access | es_ES |
dc.identifier.doi | 10.3390/s22010269 | |
dc.type.hasVersion | VoR | es_ES |