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Istituto di scienza dell'alimentazione

Torna all'elenco Contributi in rivista anno 2007

Contributo in rivista

Tipo: Articolo in rivista

Titolo: Influence of winemaking practices on the concentrations of rare earth elements in white wines studied by inductively coupled plasma-mass spectrometry.

Anno di pubblicazione: 2007

Formato: Elettronico Cartaceo

Autori: Rossano C. Eugenio; Szilagyi Zoltan; Malorni Antonio; Pocsfalvi Gabriella

Affiliazioni autori: Rossano C. Eugenio, Malorni Antonio, Pocsfalvi Gabriella: Proteomic and Biomolecular Mass Spectrometry Center (CeSMa-ProBio), Institute of Food Science and Technology, C.N.R., via Roma, 52 a/c, 83100 Avellino, Italy; Szilagyi Zoltan: Research Institute for Viticulture and Enology, Kolyukteto, 3300 Eger, Hungary

Autori CNR:


Lingua: inglese

Abstract: Influence of clarification, filtration, and storage on the concentration of rare earth elements (REEs) was studied in white wines by inductively coupled plasma mass spectrometry (ICP-MS). Smooth and parallel chondrite-normalized (CN) plots were obtained for wines which have never been in contact with fining agents. Clarification and filtration generally used in white wine production were simulated in the laboratory using nontreated reference wines, and CN plots were compared before and after treatments. Clarification by bentonites yields an overall increase in REE concentrations resulting in substantially parallel CN curves well above the plots of the corresponding nontreated wines. Filtration using silicate (SiO2), on the other hand, changes the CN profile in a nonparallel manner due to a higher release of La, Ce, Pr, Nd, and Gd, more than other elements studied. Filtration with cellulose powder causes a small increase in the concentration of light REEs, while the concentrations of other elements remain basically unchanged. Storage conditions could also affect the REE pattern of wine. We found that the influence of glass is greater than that of stainless steel and wood. In addition, we report that commercially available finished white wines from the same region show highly different REE patterns depending on the winemaking practices employed.

Pagine da: 311

Pagine a: 317


Journal of agricultural and food chemistry American Chemical Society, Books and Journals Division]
Paese di pubblicazione: Stati Uniti d'America
Lingua: inglese
ISSN: 0021-8561

Numero volume: 55

Indicizzato da: ISI Web of Science (WOS) [000243503900019]

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Allegati: Influence of winemaking practices on the concentrations of rare earth elements in white wines studied by inductively coupled plasma-mass spectrometry (application/pdf)

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