Identification of Trace Volatile Compounds in Freshly Distilled Calvados and Cognac Using Preparative Separations Coupled with Gas Chromatography−Mass Spectrometry
Autor: | Elisabeth Guichard, Jérôme Ledauphin, Jean-François Saint-Clair, Nicole Founier, Odile Lablanquie, Daniel Barillier, Hugues Guichard |
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Rok vydání: | 2004 |
Předmět: |
Chemical ionization
Chromatography Gas Chromatography Silica gel Alcoholic Beverages Extraction (chemistry) Silica Gel General Chemistry Fractionation Silicon Dioxide Mass spectrometry Gas Chromatography-Mass Spectrometry chemistry.chemical_compound chemistry Gas chromatography Volatilization Gas chromatography–mass spectrometry General Agricultural and Biological Sciences Electron ionization |
Zdroj: | Journal of Agricultural and Food Chemistry. 52:5124-5134 |
ISSN: | 1520-5118 0021-8561 |
Popis: | Gas chromatography coupled with mass spectrometry (GC-MS) using both electron impact and chemical ionization detection modes led to the determination of the volatile composition of two samples of freshly distilled Cognac and two samples of freshly distilled Calvados. A total of 169 volatile compounds were directly identified in dichloromethane extracts obtained by liquid-liquid extraction. Trace compounds present in both spirits were characterized with the help of preparative separations. In a first step, groups of compounds were separated by preparative GC, and the fractions were analyzed on a polar stationary phase by GC-MS. In a second step, silica gel fractionation was used to separate them by polarity. In this study, 331 compounds, of which 162 can be considered as trace compounds, were characterized in both freshly distilled Cognac and Calvados. Of these, 39 are common to both spirits; 30 are specific to Cognac with numerous hexenyl esters and norisoprenoidic derivatives, whereas 93 are specific to Calvados with compounds such as unsaturated alcohols, phenolic derivatives, and unsaturated aldehydes. |
Databáze: | OpenAIRE |
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