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A Case Study of Selected Volatile Phenols from Brettanomyces and Micronutrients Mn, Fe, Cu, Zn in Chianti Red Wines

Author

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  • Tamasi, Gabriella
  • Owens, Natalie
  • Cascella, Fabio
  • Cerqua, Marco
  • Cini, Renzo

Abstract

Volatile phenols 4-Ethylphenol (EtP) and 4-Ethylguaiacol (EtG), and selected metals Mn, Fe, Cu, and Zn in Chianti red wines were determined via Head-Space Solid Phase Micro-Extraction pretreatment and Gas Chromatography-Mass Spectrometry and through Atomic Absorption Spectrophotometry. The wine samples were Chianti Classico DOCG (CdB) and Toscana IGT (CF) from seven vintages 2008-2003, 2001. The concentration for EtP was in the range 283-862 (CdB) and 155-643 ug L-1 (CF), whereas the content of EtG ranged 40-116 (CdB) and 11-104 ug L-1 (CF). The content for metals ranged 1.42-1.82, 0.93-4.68, <0.10-0.20, and 0.53-1.10 mg L-1 for Mn, Fe, Cu, and Zn, respectively. The concentrations for EtP and EtG have high relative values for wines from 2004 and 2007 harvests. Interestingly, Manganese concentration follows a similar trend. Data about the metals and phenols are in agreement with much care at vine/grape and fermentation-aging-refinement procedures.

Suggested Citation

  • Tamasi, Gabriella & Owens, Natalie & Cascella, Fabio & Cerqua, Marco & Cini, Renzo, 2013. "A Case Study of Selected Volatile Phenols from Brettanomyces and Micronutrients Mn, Fe, Cu, Zn in Chianti Red Wines," Journal of Food Research, Canadian Center of Science and Education, vol. 2(1).
    • Handle: RePEc:ags:aesjfr:405046
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