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A preliminary multistep combination of pulsed electric fields and supercritical fluid extraction to recover bioactive glycosylated and lipidic compounds from exhausted grape marc

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A preliminary multistep combination of pulsed electric fields and supercritical fluid extraction to recover bioactive glycosylated and lipidic compounds from exhausted grape marc

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	Moreno, Andrés
dc.contributor.author	Barba Orellana, Francisco José
dc.date.accessioned	2023-09-05T16:13:49Z
dc.date.available	2023-09-05T16:13:49Z
dc.date.issued	2023
dc.identifier.citation	Salgado-Ramos, Manuel Martí Quijal, Francisco Juan Huertas-Alonso, Alberto J. Sánchez-Verdú, M. Prado Moreno, Andrés Barba Orellana, Francisco José 2023 A preliminary multistep combination of pulsed electric fields and supercritical fluid extraction to recover bioactive glycosylated and lipidic compounds from exhausted grape marc Lwt-Food Science And Technology 180 14725
dc.identifier.uri	https://hdl.handle.net/10550/89081
dc.description.abstract	This article reports the first multistep combination of pulsed electric field (PEF; 3 kV/cm, 100 kJ/kg, 2 Hz, 100 ms) and supercritical fluid extraction (SFE) with CO2 (10-20 MPa, 25 mL/min [10% EtOH], 50 °C, 60 min) for exhausted grape marc (EGM). This current protocol was mainly created to recover bioactive glycosylated and lipidic compounds. In this regard, total antioxidant capacity (TAC) was enhanced up to 68% after PEF treatment compared to conventional soaking. However, re-extracting PEF-treated EGM after the application of SFE (PEF + SFE) boosted the efficiency by up to 87%. Several polyphenols (kaempferol, luteolin, scutellarin, and resveratrol, among others), together with other glycosylated structures, were identified by liquid chromatography coupled with mass spectrometry analysis. The bioactive lipidic compounds extracted by SFE, along with the carbohydrate fraction (free sugars) favourably extracted by PEF pre-treatment (mainly glucose, but also fructose and sucrose), were concurrently detected by nuclear magnetic resonance. The remaining solid fraction after treatment was also characterised. Different microscopic morphology was observed by scanning electron microscopy (SEM) on untreated, PEF, and PEF + SC-CO2-treated EGM. Differential thermogravimetric (DTG) curves determined by thermogravimetric analysis (TGA) also suggested alternative and potential means for the valorisation of this matrix.
dc.language.iso	eng
dc.relation.ispartof	Lwt-Food Science And Technology, 2023, vol. 180, num. 14725
dc.subject	Antioxidants
dc.subject	Compostos orgànics
dc.title	A preliminary multistep combination of pulsed electric fields and supercritical fluid extraction to recover bioactive glycosylated and lipidic compounds from exhausted grape marc
dc.type	journal article
dc.date.updated	2023-09-05T16:13:49Z
dc.identifier.doi	10.1016/j.lwt.2023.114725
dc.identifier.idgrec	160931
dc.rights.accessRights	open access