Solid-state fermentation as a sustainable method for coffee pulp treatment and production of an extract rich in chlorogenic acids

Santos Da Silveira Jessica, Durand Noel, Lacour Stella, Belleville Marie-Pierre, Perez Ana, Loiseau Gérard, Dornier Manuel. 2019. Solid-state fermentation as a sustainable method for coffee pulp treatment and production of an extract rich in chlorogenic acids. Food and Bioproducts Processing, 115 : 175-184.

https://doi.org/10.1016/j.fbp.2019.04.001

Article de revue ; Article de recherche ; Article de revue à facteur d'impact

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Quartile : Q1, Sujet : FOOD SCIENCE & TECHNOLOGY / Quartile : Q2, Sujet : BIOTECHNOLOGY & APPLIED MICROBIOLOGY / Quartile : Q2, Sujet : ENGINEERING, CHEMICAL

Résumé : In this study, coffee pulp was used as carbon source in solid-state fermentation to produce a phenol-rich extract for industrial applications. Fermentations were carried out at laboratory (0.4 kg), semi-pilot (12 kg) and pilot (90 kg) scales in presence of 2.5 g kg−1 yeast strains and with three different coffee pulp materials. The extract stability was investigated using different stabilizing agents: SO2, ascorbic and acetic acids. Then, a study was conducted to determine the effect of ultrasound treatment on extraction yields. Results showed that higher concentrations of chlorogenic acids were obtained with fermentation without ultrasound treatment and by adding sulfite at 0.5 wt% at 8 h of fermentation. Despite of variations in coffee pulp composition, the process was validated at semi-pilot and pilot scales, providing an extract 400% richer in chlorogenic acids (600 mg kg of coffee pulp) and with lower sugar amounts to separate during the downstream processing.

Mots-clés Agrovoc : pulpe de café, traitement des déchets, composé phénolique, acide chlorogénique, fermentation alcoolique

Mots-clés géographiques Agrovoc : Costa Rica

Mots-clés libres : Coffee pulp, Chlorogenic acids, Phenolic compounds extraction, Alcoholic fermentation, Food waste treatment

Classification Agris : Q70 - Traitement des déchets agricoles

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

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