Filtration-compression step as downstream process for flavonoids extraction from citrus peels: Performances and flavonoids dispersion state in the filtrate

Zarate Vilet N., Gué E., Servent Adrien, Delalonde Michèle, Wisniewski C.. 2020. Filtration-compression step as downstream process for flavonoids extraction from citrus peels: Performances and flavonoids dispersion state in the filtrate. Food and Bioproducts Processing, 120 : 104-113.

https://doi.org/10.1016/j.fbp.2020.01.001

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 : Initiative of waste treatment has to be based on user-friendly technologies, using robust, cost-effective and low-energy consuming processes. The global objective of this study was to reduce technical steps for the extraction of flavonoids (naringin and narirutin) from citrus peel (grapefruit peel). After a first fresh peel grinding, the relevance of a simple filtration-compression, as a first downstream process, of the obtained slurry was studied. An optimization of this solid-liquid separation was proposed and the impact of a pectinolytic enzymatic treatment, resulting potentially in a larger release of flavonoids, was investigated. The results demonstrated that a preliminary step of filtration-compression, directly realized on fresh grinded peels as downstream processing for flavonoids extraction could be pertinent and that the enzymatic treatment improved the slurry filterability. An optimal separation was obtained with a transmembrane pressure of 5 bar, leading to highest extractable liquid phase volume and to an extraction around 80% of naringin and narirutin. A modelling of the filtration step, essential for the scaling of a filtration-compression process on site, was proposed. An originality of this work was to identify the dispersion state of the flavonoids within the liquid phase, capital identification for a relevant choice of the subsequent extraction step of these compounds.

Mots-clés Agrovoc : Citrus paradisi, flavonoïde, naringine, pelure, utilisation des déchets, déchet alimentaire, filtration, extraction par pression, pressage

Mots-clés complémentaires : Narirutine

Mots-clés libres : Downstream process, Filtration-compression, Enzymatic treatment, Grapefruit peels, Flavonoids, Naringin, Narirutin

Classification Agris : Q01 - Sciences et technologies alimentaires - Considérations générales
Q70 - Traitement des déchets agricoles

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

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