Application of a Single-Type eNose to Discriminate the Brewed Aroma of One Caffeinated and Decaffeinated Encapsulated Espresso Coffee Type
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Date
2022
Authors
Palacín Roca, Jordi
Rubies, Elena
Clotet Bellmunt, Eduard
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Abstract
This paper assesses a custom single-type electronic nose (eNose) applied to differentiate
the complex aromas generated by the caffeinated and decaffeinated versions of one encapsulated
espresso coffee mixture type. The eNose used is composed of 16 single-type (identical) metal–oxide
semiconductor (MOX) gas sensors based on microelectromechanical system (MEMS). This eNose
proposal takes advantage of the small but inherent sensing variability of MOX gas sensors in order to
provide a multisensorial description of volatiles or aromas. Results have shown that the information
provided with this eNose processed using LDA is able to successfully discriminate the complex
aromas of one caffeinated and decaffeinated encapsulated espresso coffee type.
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Chemosensors, 2022, vol. 10, núm. 10, 421