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Study of Influential Parameters of the C

Alexandre Vandeponseele, Micheline Draye

2026encoffee groundscaffeine extractionbiomass valorizationwaste treatmentsolventspurification

Abstract

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This article aims to study the interest of spent coffee grounds (SCG) valorization through caffeine recovery. In an original way, this study takes into account all the parameters such as (i) the brewing coffee methods (household, coffee shops, etc.); (ii) the storage conditions, in particular the drying step; (iii) the solid/liquid extraction parameters such as the nature of solvent, the temperature, the extraction time and the solid/liquid ratio; and (iv) the liquid/liquid purification parameters such as the nature, the volume and the pH of extraction medium. Results have shown that spent coffee grounds from coffee-shops obtained by percolation contain a higher amount of caffeine than spent coffee grounds from households obtained from spent pods or filters. A drying treatment is not required when extraction is performed under one week after the spent coffee grounds collection with 96.4% of not degraded caffeine. Solid/liquid extraction performed with 25 mL.g −1 SCG of hydroalcoholic solvent (water/EtOH, v/v 60/40) at 60 ◦C during 15 min have given a caffeine recovery of significant relevance.

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Cite This Work

@article{73f7fc9a-4c38-47ff-90a6-58a47eabbe96,
  title={Study of Influential Parameters of the C},
  author={Alexandre Vandeponseele and Micheline Draye},
  year={2026},
  language={en}
}
TY  - JOUR
TI  - Study of Influential Parameters of the C
AU  - Alexandre Vandeponseele
AU  - Micheline Draye
PY  - 2026
LA  - en
ER  -

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