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Sequential extraction of almond hull biomass with pulsed electric fields (PEF) and supercritical CO2 for the recovery of lipids, carbohydrates and antioxidants

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Sequential extraction of almond hull biomass with pulsed electric fields (PEF) and supercritical CO2 for the recovery of lipids, carbohydrates and antioxidants

dc.contributor.author	Salgado-Ramos, Manuel
dc.contributor.author	Martí Quijal, Francisco Juan
dc.contributor.author	Huertas-Alonso, Alberto J.
dc.contributor.author	Sánchez-Verdú, M. Prado
dc.contributor.author	Cravotto, Giancarlo
dc.contributor.author	Moreno, Andrés
dc.contributor.author	Barba Orellana, Francisco José
dc.date.accessioned	2023-09-05T16:28:19Z
dc.date.available	2023-09-05T16:28:19Z
dc.date.issued	2023
dc.identifier.citation	Salgado-Ramos, Manuel Martí Quijal, Francisco Juan Huertas-Alonso, Alberto J. Sánchez-Verdú, M. Prado Cravotto, Giancarlo Moreno, Andrés Barba Orellana, Francisco José 2023 Sequential extraction of almond hull biomass with pulsed electric fields (PEF) and supercritical CO2 for the recovery of lipids, carbohydrates and antioxidants Food and Bioproducts Processing 139 216 226
dc.identifier.uri	https://hdl.handle.net/10550/89083
dc.description.abstract	This work reports the first example of combined sequential extraction by pulsed electric fields (PEF) (3 kV/cm, 100 kJ/kg, 2 Hz, 100 ms) and supercritical (SC) fluid extraction (SFE) (15 MPa, 25 mL/min, 50ºC, 60 min) with CO2 (SC-CO2) for the valorisation of almond hull (AH) biomass. PEF+SFE boosted the efficiency of the protocol up to 77% for total antioxidant capacity and 20% in terms of polyphenols recovery compared to the traditional soaking. Triple-TOF-LC-MS-MS analysis provided the phenolic profiles for the PEF and SC-CO2 extracts, observing significant differences in the polyphenol profile according to the technology applied. Additionally, NMR analysis detected the presence of the carbohydrate soluble (mainly glucose, fructose and sucrose) and lipidic fractions, both selectively extracted by PEF or SC-CO2, respectively. Finally, the post-extraction residual solid biomass was characterized by several techniques such as TGA, FT-IR and SEM. For the latter, the formation of surface pores after PEF and a high fibre compaction after SFE was observed. On the other hand, DTG curves allowed to firmly propose concurrent valorisation routes for this solid, in agreement with a zero-waste approach.
dc.language.iso	eng
dc.relation.ispartof	Food and Bioproducts Processing, 2023, vol. 139, p. 216-226
dc.subject	Tecnologia dels aliments
dc.subject	Antioxidants
dc.title	Sequential extraction of almond hull biomass with pulsed electric fields (PEF) and supercritical CO2 for the recovery of lipids, carbohydrates and antioxidants
dc.type	journal article
dc.date.updated	2023-09-05T16:28:19Z
dc.identifier.doi	10.1016/j.fbp.2023.04.003
dc.identifier.idgrec	160913
dc.rights.accessRights	open access