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Biomolecules extraction from coffee and cocoa by- and co-products using deep eutectic solvents

Ruesgas-Ramón Mariana, Suárez-Quiroz Mirna, Gonzalez-Rios Oscar, Baréa Bruno, Cazals Guillaume, Figueroa-Espinoza Maria-Cruz, Durand Erwann. 2020. Biomolecules extraction from coffee and cocoa by- and co-products using deep eutectic solvents. Journal of the Science of Food and Agriculture, 100 (1) : pp. 81-91.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
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Abstract : BACKGROUND: Coffee pulp (CP), cocoa husk (CH), and pod husk (CPH) are the main agro‐residues from coffee and cocoa industries. They are sources of useful biomolecules, such as phenolic compounds, fibers, and alkaloids, among others. In this study, different compositions of deep eutectic solvents (DES) were investigated as a green and sustainable extraction media, with respect to their extraction capacity. The extraction yields were evaluated using heat stirring‐assisted extraction (HSE) or ultrasound‐probe assisted extraction (UPAE). RESULTS: The results showed an important effect of the DES composition. Choline chloride (ChCl) based‐DES were the most effective, specifically lactic acid:ChCl (2:1 mol ratio), and the extraction capacity of DES was higher with UPAE (3 min/constant duty cycle (200 W)), in comparison with HSE (1 h/30 min). Chlorogenic acid, caffeine, and theobromine were identified as the main bioactive compounds. Interestingly, under specific conditions, DES allowed the formation of a molecule, identified as furfural by ultrahigh‐performance liquid chromatography mass spectrometry (UPLC‐MS), which could not be obtained using conventional extraction solvent (ethanol 70% v/v). CONCLUSION: DES showed a sustainability and high extraction capacity of biomolecules. In addition, their use as extraction solvents could lead to the formation and production of valuable building block molecules from plant biomass. © 2019 Society of Chemical Industry.

Mots-clés Agrovoc : Pulpe de café, Coque de cacao, Coque de grain, Solvant, Composé phénolique, Furfural

Mots-clés libres : Coffee pulp, Cocoa husk, Cocoa pod husk, DES (deep eutectic solvents), Phenolic compounds, Furfural

Classification Agris : Q02 - Food processing and preservation

Champ stratégique Cirad : CTS 3 (2019-) - Systèmes alimentaires

Auteurs et affiliations

  • Ruesgas-Ramón Mariana, Montpellier SupAgro (FRA)
  • Suárez-Quiroz Mirna, Instituto Tecnologico de Veracruz (MEX)
  • Gonzalez-Rios Oscar, Instituto Tecnologico de Veracruz (MEX)
  • Baréa Bruno, CIRAD-PERSYST-UMR IATE (FRA)
  • Cazals Guillaume, Université de Montpellier (FRA)
  • Figueroa-Espinoza Maria-Cruz, Montpellier SupAgro (FRA) - auteur correspondant
  • Durand Erwann, CIRAD-PERSYST-UMR IATE (FRA) ORCID: 0000-0002-0306-8081 - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/594234/)

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