[Simultaneous analysis of aromatic aldehydes and coumarins with high pressure liquid chromatography. Application to wines and brandies stored in oak barrels].
Aromatic aldehydes (vanillin, syringaldehyde, coniferaldehyde and sinapaldehyde) and coumarins (esculetin, umbelliferone, scopoletin and methylumbelliferone) are natural wood compounds. Storage of wines and brandies in oak barrels increases notably aldehydes and coumarins (particularly scopoletin) concentrations. These compounds were separated by high-performance liquid chromatography, on hydrocarbon bonded reversed-phase packings, with a water-acetonitrile elution gradient. They were first extracted from wines and brandies by diethyl ether and then injected on chromatographic column. A double detection was used to determine simultaneously aromatic aldehydes and coumarins by UV absorption and fluorescence respectively.
D000434:Alcoholic Beverages / Q000032:analysis*; D000447:Aldehydes / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid; D003374:Coumarins / Q000032:analysis*; D013056:Spectrophotometry, Ultraviolet; D014920:Wine / Q000032:analysis*; D014934:Wood
D000447:Aldehydes; D003374:Coumarins
Dosage simultané des aldéhydes aromatiques et des coumarines par chromatographie liquide haute performance. Application aux vins et eaux-de-vie vieillis en fût de chêne.