High-value compounds obtained from grape canes (Vitis vinifera L.) by steam pressure alkali extraction

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dc.contributor.authorSantos, Jorge
dc.contributor.authorEscobar-Avello, Danilo
dc.contributor.authorMagalhaes, Pedro
dc.contributor.authorMartins, Jorge Manuel
dc.contributor.authorGonzalez-alvarez, Julia
dc.contributor.authorCarvalho, Luisa Hora de
dc.date.accessioned2025-01-20T21:07:33Z
dc.date.available2025-01-20T21:07:33Z
dc.date.issued2022
dc.description.abstractThe main by-product generated by the wine industry is the grape canes derived from the pruning process. The aim of the current work was the valorisation of this highly poly phenolic lignocellulosic material, by alkali extraction methodology avoiding alcoholic solvents use. In lignocellulosic by-products valorisation, it is important to take into account the variability of the raw material. In the case of vine pruning this may be due to the different varieties used, the geographical area, the climate, or the processing. It is, however, important to develop a global strategy for valorisation, from a biorefinery and circular economy point of view. In this work, the grape canes were characterised, before and after the extraction process, by Fourier transform infrared spectroscopy - attenuated total reflectance (FTIR-ATR) spectroscopy. Changes in cellulose crystallinity, hemicellulose content and structural conformation of proteins, due to the alkali thermal extraction process were identified and evaluated. For the first time, a steam pressure alkali extraction method was used on this material. The products were characterised by FTIR-ATR and Matrix Assisted Laser Desorption Ionisation-Time of Flight (MALDI-TOF) mass spectrometry. The presence of high-value compounds such as stilbene oligomers and condensed tannins was demonstrated in the extracts. The work shows the viability of the steam pressure alkali extraction, a simple and environmentally friendly method, for grape cane valorisation. (c) 2022 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.fbp.2022.04.003
dc.identifier.eissn1744-3571
dc.identifier.issn0960-3085
dc.identifier.urihttps://doi.org/10.1016/j.fbp.2022.04.003
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/93421
dc.identifier.wosidWOS:000796508900003
dc.language.isoen
dc.pagina.final167
dc.pagina.inicio153
dc.revistaFood and bioproducts processing
dc.rightsacceso restringido
dc.subjectVine shoots
dc.subjectResveratrol
dc.subjectPolyphenols
dc.subjectBiorefinery
dc.subjectAlkali extraction
dc.subjectFTIR-ATR
dc.subjectMALDI-TOF
dc.titleHigh-value compounds obtained from grape canes (Vitis vinifera L.) by steam pressure alkali extraction
dc.typeartículo
dc.volumen133
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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