Late harvest (LHW) and ice harvest (IHW) Gewürztraminer wine samples from Croatia (Ilok) were investigated. Their technological parameters, chromaticity coordinates, total phenols content, and antioxidant capacity were determined. 5-(Hydroxymethyl)furfural, xanthine, and trans-caftaric acid were analyzed in the samples by high performance liquid chromatography (HPLC-DAD). Headspace solid-phase microextraction (HS-SPME) followed by gas chromatography and mass spectrometry (GC/MS) analysis revealed isoamyl alcohol as predominant compound (21.25 – 60.30%). Diethyl succinate, 2-phenylethanol, and benzaldehyde were also abundant. Ethyl octanoate (1.48 – 5.70%) and ethyl caprate (0.48 – 4.83%) decreased significantly in LHW, being the lowest in IHW. Two solvents were applied for the samples extraction (solvent A – pentane/diethyl ether 1:2 (v/v) and solvent B – dichloromethane), and the extracts were analyzed by GC/MS. Ethyl hydrogen succinate (solvent A: 27.30 – 52.04%; solvent B: 28.04 – 46.69%) and diethyl succinate (solvent A: 5.21 – 18.2%; solvent B: 2.66 – 7.72%) were predominant in IHW and LHW. Aromatic alcohols were also found: 2-phenylethanol (solvent A: 7.07 – 21.09%; solvent B: 5.50 – 11.82%), 4-hydroxybenzyl alcohol (solvent A: 1.45 – 6.68%; solvent B: 2.47 – 12.16%) and benzyl alcohol (solvent A: 0.10 – 0.77%). The obtained results complement a previous study on IHW (Gewürztraminer) from Croatia providing new features and indicating great chemical diversity among the samples.

Insight into the Chemical Diversity of Late/Ice Harvest Gewürztraminer Wine

Serreli, Gabriele;Tuberoso, Carlo Ignazio Giovanni
Ultimo
2018-01-01

Abstract

Late harvest (LHW) and ice harvest (IHW) Gewürztraminer wine samples from Croatia (Ilok) were investigated. Their technological parameters, chromaticity coordinates, total phenols content, and antioxidant capacity were determined. 5-(Hydroxymethyl)furfural, xanthine, and trans-caftaric acid were analyzed in the samples by high performance liquid chromatography (HPLC-DAD). Headspace solid-phase microextraction (HS-SPME) followed by gas chromatography and mass spectrometry (GC/MS) analysis revealed isoamyl alcohol as predominant compound (21.25 – 60.30%). Diethyl succinate, 2-phenylethanol, and benzaldehyde were also abundant. Ethyl octanoate (1.48 – 5.70%) and ethyl caprate (0.48 – 4.83%) decreased significantly in LHW, being the lowest in IHW. Two solvents were applied for the samples extraction (solvent A – pentane/diethyl ether 1:2 (v/v) and solvent B – dichloromethane), and the extracts were analyzed by GC/MS. Ethyl hydrogen succinate (solvent A: 27.30 – 52.04%; solvent B: 28.04 – 46.69%) and diethyl succinate (solvent A: 5.21 – 18.2%; solvent B: 2.66 – 7.72%) were predominant in IHW and LHW. Aromatic alcohols were also found: 2-phenylethanol (solvent A: 7.07 – 21.09%; solvent B: 5.50 – 11.82%), 4-hydroxybenzyl alcohol (solvent A: 1.45 – 6.68%; solvent B: 2.47 – 12.16%) and benzyl alcohol (solvent A: 0.10 – 0.77%). The obtained results complement a previous study on IHW (Gewürztraminer) from Croatia providing new features and indicating great chemical diversity among the samples.
2018
Antioxidant activities; GC/MS; HPLC-DAD; Late/ice harvest wine; Targeted polar compounds; Volatiles; Bioengineering; Biochemistry; Chemistry (all); Molecular medicine; Molecular biology
File in questo prodotto:
File Dimensione Formato  
2018 Gewurztraminer C&B.pdf

Solo gestori archivio

Descrizione: Articolo principale
Tipologia: versione editoriale
Dimensione 810.77 kB
Formato Adobe PDF
810.77 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/254701
Citazioni
  • ???jsp.display-item.citation.pmc??? 0
  • Scopus 0
  • ???jsp.display-item.citation.isi??? 1
social impact