Speciation of Zn, Fe, Ca and Mg in wine with the Donnan Membrane Technique
| dc.contributor.author | Lao, Mireia | |
| dc.contributor.author | Companys Ferran, Encarnació | |
| dc.contributor.author | Weng, Liping | |
| dc.contributor.author | Puy Llorens, Jaume | |
| dc.contributor.author | Galceran i Nogués, Josep | |
| dc.date.accessioned | 2018-09-14T07:03:29Z | |
| dc.date.available | 2018-09-14T07:03:29Z | |
| dc.date.issued | 2018 | |
| dc.identifier.issn | 0308-8146 | |
| dc.identifier.uri | http://hdl.handle.net/10459.1/64708 | |
| dc.description.abstract | Free concentrations of Zn2+, Fe3+, Ca2+ and Mg2+ in a red wine (Raimat, Catalonia, Spain) have been determined, with the Donnan Membrane Technique (DMT) for the first time. The required equilibration time benefits from the acceptor solution including major cations. K+ and Na+, mainly unbound to any ligand in the sample, have been identified as suitable reference ions. A free Zn concentration of 1.76 micromol L-1 determined with DMT was in excellent agreement with the free Zn concentration independently provided by the electroanalytical technique Absence of Gradients and Nernstian Equilibrium Stripping (AGNES), 1.7 micromol L-1, amounting to 14.4% of the total Zn. The free concentrations found in this wine were 1.79 micromol L-1 Fe3+, 1.11 mmol L 1 Ca2+ and 3.4 mmol L-1 Mg2+ (8.82%, 40% and 57% of their total concentrations). Prior to the application of the techniques to the red wine, they had been cross-validated in Zn-tartrate solutions. | |
| dc.description.sponsorship | This work was financially supported by the Spanish Ministerio de Economía y Competitividad (projects CTM2013-48967 and CTM2016-78798), and from the “Comissionat per a Universitats i Recerca del Departament d’Innovació, Universitats i Empresa de la Generalitat de Catalunya”. | |
| dc.format.mimetype | application/pdf | |
| dc.language.iso | eng | |
| dc.publisher | Elsevier | |
| dc.relation | MINECO/PN2013-2016/CTM2013-48967 | |
| dc.relation | MINECO/PN2013-2016/CTM2016-78798 | |
| dc.relation.isformatof | Versió postprint del document publicat a: https://doi.org/10.1016/j.foodchem.2017.07.040 | |
| dc.relation.ispartof | Food Chemistry, 2018, vol. 239, p. 1143-1150 | |
| dc.rights | cc-by-nc-nd, (c) Elsevier, 2017 | |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| dc.subject | Donnan Membrane Technique | |
| dc.subject | Absence of Gradients and Nernstian Equilibrium Stripping | |
| dc.subject | Zinc | |
| dc.subject | Iron | |
| dc.subject | Wine | |
| dc.title | Speciation of Zn, Fe, Ca and Mg in wine with the Donnan Membrane Technique | |
| dc.type | info:eu-repo/semantics/article | |
| dc.date.updated | 2018-09-14T07:03:31Z | |
| dc.identifier.idgrec | 025943 | |
| dc.type.version | info:eu-repo/semantics/acceptedVersion | |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.identifier.doi | https://doi.org/10.1016/j.foodchem.2017.07.040 |
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