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Metals and metal-binding ligands in wine: Analytical challenges in identification. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.04.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Changes in Metal Ion Concentrations in a Chardonnay Wine Related to Oxygen Exposure during Vinification. Molecules 2019; 24:molecules24081523. [PMID: 30999713 PMCID: PMC6515052 DOI: 10.3390/molecules24081523] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/12/2019] [Accepted: 04/13/2019] [Indexed: 11/17/2022] Open
Abstract
The impact of oxygen exposure during winemaking on metal ion concentrations in wine were investigated throughout the winemaking process in a Chardonnay wine. The concentrations of Al, Ca, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Sn, and Zn were determined using inductively coupled plasma-mass spectrometry. Oxygen exposure significantly impacted 13 metal ions at different phases of winemaking. However, only the concentrations of Cr, Cu, and Fe were impacted by early oxygen exposure during pressing, with lower Cr and Cu concentrations in wines that were aerobically pressed and lower concentrations of Fe in wines that were inertly pressed. The sequestering of Al, Cu, Ni, and Zn by wine lees was significantly affected by oxygen treatment, with lees collected from wines that were treated oxidatively sequestering significantly greater amounts of Cu and Zn and removing these metals from the wine supernatant. The metal ion that was most affected by oxygen exposure during pressing and handling was Cu, with significantly lower Cu measured in wines that were produced under oxidative conditions. It is known that elevated Cu concentrations have negative implications for wine aroma and flavour. This study demonstrated that oxygen management during winemaking significantly impacts metal ion concentrations in lees and wine, which may decrease the risk of developing taints and faults.
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Salinas G, Ibanez JG, Vásquez-Medrano R, Frontana-Uribe BA. Analysis of Cu in Mezcal Commercial Samples using Square Wave Anodic Stripping Voltammetry. J ELECTROCHEM SCI TE 2018. [DOI: 10.33961/jecst.2018.9.4.276] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Salinas G, Frontana-Uribe BA, Reculusa S, Garrigue P, Kuhn A. Highly Ordered Macroporous Poly-3,4- ortho-xylendioxythiophene Electrodes as a Sensitive Analytical Tool for Heavy Metal Quantification. Anal Chem 2018; 90:11770-11774. [PMID: 30251532 DOI: 10.1021/acs.analchem.8b03779] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Highly ordered macroporous electrodes of the conducting polymer poly-3,4- ortho-xylendioxythiophene (PXDOT) are presented as a sensitive analytical tool for heavy metal ion quantification due to a controlled gain in electroactive area. They were designed by using colloidal crystal templates. A direct correlation between the final number of porous layers and the deposition charge ( Qd) employed for electropolymerization is observed. All the electrodes exhibit a surface-templated structure due to an interaction between the radical cation, formed during the electropolymerization, and the surface groups of the silica beads. The voltamperometric response of the macroporous PXDOT electrodes shows a rather fast electron transfer with Δ Ep values between 70 mV and 110 mV. Square wave anodic stripping voltammetric (SWASV) analysis of Cu2+ as a representative heavy metal ion shows a linear response in the subppm range. As a model application, the efficient quantification of Cu2+ in a commercial mezcal sample is validated by the standard addition method and the results correlate adequately with the values obtained by atomic absorption spectroscopy.
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Affiliation(s)
- Gerardo Salinas
- Univ. Bordeaux, ISM, UMR 5255, Bordeaux INP, Site ENSCBP, F 33607 Pessac , France.,Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM , Toluca 50200 , Estado de México , México
| | - Bernardo A Frontana-Uribe
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM , Toluca 50200 , Estado de México , México.,Instituto de Química , Universidad Nacional Autónoma de México , Circuito Exterior, Ciudad Universidad 04510 , Ciudad de México , México
| | - Stéphane Reculusa
- Univ. Bordeaux, ISM, UMR 5255, Bordeaux INP, Site ENSCBP, F 33607 Pessac , France.,CNRS, ISM, UMR 5255, F-33400 Talence , France
| | - Patrick Garrigue
- Univ. Bordeaux, ISM, UMR 5255, Bordeaux INP, Site ENSCBP, F 33607 Pessac , France.,CNRS, ISM, UMR 5255, F-33400 Talence , France
| | - Alexander Kuhn
- Univ. Bordeaux, ISM, UMR 5255, Bordeaux INP, Site ENSCBP, F 33607 Pessac , France.,CNRS, ISM, UMR 5255, F-33400 Talence , France
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Sakellari A, Karavoltsos S, Plavšić M, Bempi E, Papantonopoulou G, Dassenakis M, Kalogeropoulos N. Copper complexing properties, trace metal content and organic matter physico-chemical characterization of Greek beers. Microchem J 2017. [DOI: 10.1016/j.microc.2017.07.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Mosquera RA, Estévez L, Bugarín MG. Computational studies on conformation, electron density distributions, and antioxidant properties of anthocyanidins. Methods Mol Biol 2015; 1208:257-76. [PMID: 25323513 DOI: 10.1007/978-1-4939-1441-8_19] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Computational studies carried out at density functional theory levels are able to provide reliable chemical information about medium sized compounds as anthocyanins and their aglycons (anthocyanidins). Thus, they indicate that the most stable tautomers in aqueous solution for the main anthocyanidins (excluding pelargonidin) are deprotonated at C4' in the neutral forms, while deprotonations at C5 and C4' characterize the most stable anions in solution. QTAIM electron density analysis (overviewed in brief in the methods section) shows that Lewis structures usually employed give rise to unreliable atomic charges. Thus: (1) The positive charge spreads throughout the whole cation, and is not localized on any specific atom or set of atoms; (2) Neutral forms can be described as enolates where the negative charge is counterbalanced in a different way to that indicated by the typical resonance forms; and (3) The negative charge of anions is mainly spread among three regions of the molecule: the two deprotonated sites and the C9-O1-C2 area. The analysis of a group of complexes formed by a model of cyanin with four common metalic cations (Mg(II), Al(II), Cu(II), Zn(II)), shows: (1) the preference for tetracoordination in Zn(II) and Cu(II) complexes, (2) higher affinity for Cu(II) than for the other metals here studied, and (3) the distortion of electron density in the cyanin ligand affects the whole molecule. This distortion can be described as a continuous polarization where, even, in some cases, the atomic electron populations of those atoms of the ligand that are more directly involved in bonding to the metal increase.
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Affiliation(s)
- Ricardo A Mosquera
- Department of Physical Chemistry, University of Vigo, Bloque E, Planta 2ª, Seminario 8, Lagoas-Marcosende s/n, Vigo, 36200, Spain,
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García Bugarín M, Mosquera RA. On the structure of Zn(II) and Cu(II) cyanin complexes in aqueous solution. Struct Chem 2014. [DOI: 10.1007/s11224-014-0445-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Pan XD, Tang J, Chen Q, Wu PG, Han JL. Evaluation of direct sampling method for trace elements analysis in Chinese rice wine by ICP–OES. Eur Food Res Technol 2013. [DOI: 10.1007/s00217-012-1888-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Soto Vázquez E, Rio Segade S, Fernández Gomez E. Incidence of the Winemaking Technique on Metal Content and Phenolic Composition of Red Wines. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2013. [DOI: 10.1080/10942912.2011.558228] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Castañeda-Ovando A, Galán-Vidal CA, Pacheco-Hernández MDL, Rodríguez JA, Páez-Hernández M. Evaluación del contenido de metales y su efecto en la estabilidad de antocianinas Metal content evaluation and its effect on the stability of anthocyanins. CYTA - JOURNAL OF FOOD 2009. [DOI: 10.1080/19476330903092837] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Esparza I, Santamaría C, Calvo MI, Fernández JM. Composition and analysis of colloidal matter along wine-making. Exploitation of its antioxidant activity in final stabilisation residues. Microchem J 2009. [DOI: 10.1016/j.microc.2008.07.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ibanez JG, Carreon-Alvarez A, Barcena-Soto M, Casillas N. Metals in alcoholic beverages: A review of sources, effects, concentrations, removal, speciation, and analysis. J Food Compost Anal 2008. [DOI: 10.1016/j.jfca.2008.06.005] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Companys E, Naval-Sánchez M, Martínez-Micaelo N, Puy J, Galceran J. Measurement of free zinc concentration in wine with AGNES. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:8296-8302. [PMID: 18759440 DOI: 10.1021/jf8013475] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
AGNES (absence of gradients and Nernstian equilibrium stripping), a voltammetric technique recently introduced to measure free metal concentration in solution and checked with different natural and synthetic aqueous media, has been applied here to determine free Zn concentration in wine. The content of ethanol in a solution increases its viscosity, and, so, the diffusion coefficient decreases. Another added effect in ethanolic solutions is the increase of the activity of the metal ions, due to the decrease of the permittivity in the alcoholic medium with respect to the aqueous one. With this taken into account, a specific methodology has been developed to apply AGNES in ethanolic media. A relevant point in this methodology has been the introduction of a new kind of blank, the EDTA blank, able to be applied in the same natural sample and with the same potential program. The free Zn concentrations of the two wines analyzed, a red and a white Raimat wine, were 4.5(2) x 10 (-7) and 7.2(4) x 10 (-7) M, respectively. These represent around 5% of the total Zn content. In the wine samples analyzed, it was checked that intermetallic formation of Zn-Cu does not affect the measurement of free Zn in a significant way.
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Affiliation(s)
- Encarnació Companys
- Departament de Química, Universitat de Lleida, Rovira Roure 191, 25198 Lleida, Spain
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