Sensory study of the character impact aroma compounds of a coffee beverage

Abstract

The more potent odorants in a sample of medium-roasted Arabica coffee and in the corresponding brew were quantified. Large amounts ( >75%) of acetaldehyde, 2,3-butanedione, 2,3-pentanedione, vanillin and some furanones were extracted from the coffee brew, whereas the yields of the more unpolar compounds, such as 3-isobutyl-2-methoxypyrazine, (E)-β-damascenone and the unstable 2-furfurylthiol were low (<25%). On the basis of quantitative data an aroma model was prepared for the brew. In triangle tests, models containing the complete set of 24 odorants were compared with a model missing one or more odorants. These experiments indicated that the aroma of the brew was mainly caused by some alkylpyrazines, furanones and phenols, and by 2-furfurylthiol, methional and 3-mercapto-3-methylbutyl formate. The higher impact of both methional and the formate on the aroma of the brew and the lower aroma activity of 4-vinylguaiacol were in contrast to results obtained in a previous study for ground coffee of the same provenance and roast degree.

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Received: 13 December 1999 / Revised version: 31 January 2000

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Mayer, F., Czerny, M. & Grosch, W. Sensory study of the character impact aroma compounds of a coffee beverage. Eur Food Res Technol 211, 272–276 (2000). https://doi.org/10.1007/s002170000169

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  • Key words Coffee brew
  • Aroma compounds
  • Quantification
  • Extraction yield
  • Aroma model
  • Omission experiments