| Title: | Sensory-directed characterisation of distinctive aromas of Sauternes and Viognier wines through semi-preparative liquid chromatography and gas chromatography approaches |
| Author(s): | Siebert TE; Stamatopoulos P; Francis IL; Darriet P; |
| Address: | "The Australian Wine Research Institute, PO Box 197, Glen Osmond, Adelaide SA 5064, Australia; School of Pharmacy and Medical Science, University of South Australia, G.P.O Box 2471, Adelaide, SA 5001, Australia; University of Bordeaux, Unite de recherche OEnologie, EA 4577, USC 1366 INRAE, F-33140 Villenave d'Ornon, France. Electronic address: tracey.siebert@awri.com.au. University of Bordeaux, Unite de recherche OEnologie, EA 4577, USC 1366 INRAE, F-33140 Villenave d'Ornon, France. The Australian Wine Research Institute, PO Box 197, Glen Osmond, Adelaide SA 5064, Australia; School of Pharmacy and Medical Science, University of South Australia, G.P.O Box 2471, Adelaide, SA 5001, Australia" |
| DOI: | 10.1016/j.chroma.2020.461803 |
| ISSN/ISBN: | 1873-3778 (Electronic) 0021-9673 (Linking) |
| Abstract: | "Gas chromatography-olfactometry-mass spectrometry (GC-O-MS) has been very useful in identifying aroma compounds from within the complex matrix of wine. Supplementary separation can be required to overcome co-elution of volatiles or other sensory-directed chromatographic strategies are needed, including multidimensional chromatography and preparative fraction collection coupled to GC. Studies investigating 'overripe orange' aroma in sweet Sauternes wine and the similar 'apricot' aroma in Viognier wine were conducted. Wines with the targeted aroma attributes were selected and concentrated wine extracts prepared. GC-O found no individual aroma compounds with the targeted aroma attribute. Semi-preparative HPLC was used to obtain less complex fractions of the wine extracts. The fractions were eluted in water/ethanol and, therefore, could be smelled directly. Fractions with the targeted aroma character were further resolved by GC-preparative fraction collection (GC-PFC). Recombinational GC-PFC demonstrated the importance of the components within a 4 min preparative GC fraction to the 'overripe orange' aroma of typical Bordeaux dessert wine. In Viognier wine, monoterpenes linalool, alpha-terpineol and geraniol as well as benzaldehyde were found to be associated with the 'apricot' character. Thus, several wine aroma compounds interact for these specific aromas to be perceived. This sensory-led combination of separation techniques is a powerful tool for the identification of key compounds responsible for specific aromas across the wine and beverage industries" |
| Keywords: | "Chromatography, High Pressure Liquid/methods Female Gas Chromatography-Mass Spectrometry/*methods Humans Monoterpenes/analysis Odorants/*analysis Volatile Organic Compounds/analysis Wine/analysis GC preparative fraction collection HPLC fractionation Senso;" |
| Notes: | "MedlineSiebert, Tracey E Stamatopoulos, Panagiotis Francis, I Leigh Darriet, Philippe eng Netherlands 2021/01/01 J Chromatogr A. 2021 Jan 25; 1637:461803. doi: 10.1016/j.chroma.2020.461803. Epub 2020 Dec 16" |
