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Title:The contents of Cu, Mn, Zn, Cd, Cr, and Pb at different stages of the winemaking process
Authors:ID Kristl, Janja (Author)
ID Veber, Marjan (Author)
ID Slekovec, Metka (Author)
Files:.pdf Acta_Chimica_Slovenica_2003_Kristl,_Veber,_Slekovec_THE_CONTENTS_OF_Cu,_Mn,_Zn,_Cd,_Cr_AND_Pb_AT_DIFFERENT_STAGES_OF_THE_WINEMAKING_PROC.pdf (379,25 KB)
MD5: 397D54F6CC09C385F01FBCE78E2CCE2D
URL http://acta-arhiv.chem-soc.si/50/50-1-123.pdf
Work type:Scientific work
Typology:1.01 - Original Scientific Article
Organization:FKBV - Faculty of Agriculture and Life Sciences
Abstract:In samples taken during different stages of winemaking process (from grapes, crushed grapes, pressed pomace, must deposit, deposit of lees, must before and after clarification and wine) the Cu, Mn and Zn contents were determined by flame atomic absorption spectrometry (FAAS) and the Cd, Pb and Cr contents were determined by electrothermal atomic absorption spectrometry (ETAAS). Grapes, crushed grapes, pressed pomace, must deposit and deposit of lees were microwave digested with nitric acid, hydrofluoric acid and hydrogen peroxide solution, while for must and wine no special treatments were necessary. The highest contents of Cu, Mn, Zn, Pb, Cd and Cr were determined in the pressed pomace, lees, and in white grape varieties also in must deposit. Mean values obtained of dry weight (pressed pomace, lees, must deposit) were 63 mg/kg, 300 mg/kg, 184 mg/kg for Cu, 11 mg/kg, 15 mg/kg, 134 mg/kg for Mn, 14 mg/kg, 35 mg/kg, 17 mg/kg for Zn, 0.3 mg/kg, 0.5 mg/kg, 0.6 mg/kg for Pb, 0.5 mg/kg, 1.0 mg/kg, 1.8 mg/kg for Cr, 15.4 µg/kg, 24.4 µg/kg, 13.0 µg/kg for Cd. The Cu content was decreasing from the grapes to the bottled wine, whereas the Mn, Zn, Cd, Cr and Pb contents in the bottled wine were higher than in musts in all investigated white and red grape varieties. In ten wine samples the following contents were determined: Cu; mean 0.12 mg/L (range: 0.06-0.30 mg/L), Mn; mean 1.04 mg/L (range: 0.60-1.78 mg/L), Zn; mean 0.50 mg/L (range: 0.13-1.03 mg/L), Cd; mean 0.34 µg/L (range: 0.08-1.04 µg/L), Cr; mean 17.0µg/L (range: 5.2-25.1 µg/L) and Pb; mean 25.3 µg/L (range: 16.4-37.8 µg/L).
Keywords:viticulture, chemical processes, chemical elements, chemical analysis
Publication status:Published
Publication version:Version of Record
Year of publishing:2003
Number of pages:str. 123-136
Numbering:Letn. 50, št. 1
PID:20.500.12556/DKUM-53105 New window
ISSN on article:1318-0207
COBISS.SI-ID:1967916 New window
Publication date in DKUM:10.07.2015
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Record is a part of a journal

Title:Acta Chimica Slovenica
Shortened title:Acta Chim. Slov.
Publisher:Slovensko kemijsko društvo
COBISS.SI-ID:14086149 New window


License:CC BY 4.0, Creative Commons Attribution 4.0 International
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:10.07.2015

Secondary language

Title:Vsebnost Cu, Mn, Zn, Cd, Cr in Pb v različnih stopnjah pridelave vina
Abstract:V vzorcih odvzetih v različnih stopnjah predelave grozdja (v grozdju, drozgi, tropinah, usedlini po razsluzu mošta, v drožeh, v moštu pred in po razsluzu in v vinu) smo določili vsebnost Cu, Mn in Zn s plamensko atomsko absorpcijsko spektrometrijo (FAAS) in vsebnost Cd, Pb in Cr z elektrotermično atomsko absorpcijsko spektrometrijo (ETAAS). Vzorce grozdja, drozge, tropin, usedline po razsluzu mošta in droži smo razkrojili v mikrovalovni peči z dušikovo (V) kislino, fluorovodikovo kislino in vodikovim peroksidom. Za mošt in vino predhodna priprava vzorcev ni bila potrebna. Najvišje vsebnosti Cu, Mn, Zn, Pb, Cd in Cr smo določili v tropinah, drožeh in pri belih sortah grozdja tudi v usedlini po razsluzu mošta. Srednje vrednosti preračunane na suho snov (tropin, droži, usedline po razsluzu mošta) so bile 63 mg/kg, 300 mg/kg, 184 mg/kg za Cu, 11 mg/kg, 15 mg/kg, 134 mg/kg za Mn, 14 mg/kg, 35 mg/kg, 17 mg/kg za Zn, 0.3 mg/kg, 0.5 mg/kg, 0.6 mg/kg za Pb, 0.5 mg/kg, 1.0 mg/kg, 1.8 mg/kg za Cr, 15.4 µg/kg, 24.4 µg/kg, 13.0 µg/kg za Cd. Vsebnost Cu je padala od grozdja do stekleničenega vina. Pri vseh analiziranih belih in rdečih sortah so bile vsebnosti Mn, Zn, Cd, Cr in Pb v stekleničenih vinih višje kot v moštih. V desetih vzorcih vina smo določili naslednje vrednosti: Cu; srednja vrednost 0.12 mg/L (območje: 0.06-0.30 mg/L), Mn; srednja 1.04 mg/L (območje: 0.06- 1.78 mg/L), Zn; srednja 0.50 mg/L (območje: 0.13-1.03 mg/L), Cd; srednja 0.34 µg/L (območje: 0.08-1.04 µg/L), Cr; srednja 17.0 µg/L (območje: 5.2-25.1 µg/L), Pb; 25.3µg/L (območje: 16.4-37.8 µg/L).
Keywords:vinarstvo, kemični procesi, kemični elementi, kemične analize


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