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Freshly Roasted Coffee Reevaluated: Pilot Study on the Impact of Post-Roast Maturation on Sensory Experience
* 1 , 2
1  University of Applied Sciences Heilbronn, Max-Planck-Str. 39, 74081 Heilbronn, Germany
2  Coffee Consulate, Hans-Thoma-Strasse 20, 68163 Mannheim, Germany
Academic Editor: Dirk W. Lachenmeier

https://doi.org/10.3390/ICC2024-18164 (registering DOI)
Abstract:

‘Freshly roasted’ has long been considered the ultimate indicator of coffee quality. This study challenges this concept by arguing that coffee, as a complex processed agricultural product, undergoes a critical developmental ‘maturation’ phase after roasting that is significant for its sensory experience. Thus, the study investigates whether there is (i) a discernible sensory effect and (ii) a perceptible consumer preference for ‘freshly roasted’ coffee beans by means of a triangle test (ISO 4120:2021) combined with a hedonic preference test (ISO 8587:2010) on 42 untrained participants. Triangle test results indicate that there is a significant difference between the samples, and a slight majority expressed a preference for not ‘freshly roasted’, encouraging a more nuanced approach to the issue.

Keywords: coffee; quality; freshly roasted; maturation; preference test; sensory analysis
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