A new electrochemical sensor for extra-virgin olive oils classification
| Autor: | Danilo Dini, Daniele Zappi, Claudia Sadun, Michela Antonelli, Lorenzo Gontrani |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Working electrode
Materials science screen-printed electrode Carbon nanotube 01 natural sciences Nanomaterials law.invention chemistry.chemical_compound Settore CHIM/01 0404 agricultural biotechnology Settore CHIM/02 law sensor olive oils cultivar bio-based RTIL nanomaterials 010401 analytical chemistry 04 agricultural and veterinary sciences 040401 food science Environmentally friendly 0104 chemical sciences Titanium oxide Electrochemical gas sensor chemistry Chemical engineering Ionic liquid Cyclic voltammetry Food Science Biotechnology |
| Popis: | A screen-printed electrode was modified using multi-walled carbon nanotubes (MWCNT) and titanium oxide nanoparticles (TiO2), with a bio-based ionic liquid (RTIL) as a drop-casting medium. The RTILs here used have been proved to be useful for immobilizing nanomaterials on the working electrode surface. The proposed platform has been used to analyze extra-virgin olive oils (EVOOs), produced with olives of known cultivar and geographic origin. The EVOOs were produced with the olives that have been collected in the Italian region of Lazio during 2016, 2017 and 2018 harvesting seasons. The analyses of the oils were done by means of cyclic voltammetry measures. The results here obtained encourage the establishment of criteria for the classification of oils in terms of the corresponding cultivar. Both the electrode modification and the olive oil analysis do not involve any organic solvents. Therefore, the proposed approach represents an environmentally friendly method for field analyses of EVOOs. |
| Databáze: | OpenAIRE |
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