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dc.contributor.authorRamos Andrés, Marta 
dc.contributor.authorAndrés Iglesias, Cristina
dc.contributor.authorGarcía Serna, Juan 
dc.date.accessioned2020-11-30T10:18:28Z
dc.date.available2020-11-30T10:18:28Z
dc.date.issued2019
dc.identifier.citationBioresource Technology Volume 292, 2019, 121940es
dc.identifier.issn0960-8524es
dc.identifier.urihttp://uvadoc.uva.es/handle/10324/43722
dc.descriptionProducción Científicaes
dc.description.abstractSpent coffee grounds are a huge residual stream from instant coffee makers. The production of spent coffee oil and molecular weight fractionated hemicellulose hydrolysates via supercritical CO2 and a hydrothermal treatment followed by concentration, separation, and purification through cascade ultrafiltration/diafiltration (30-10-5 kDa) was studied. Hemicelluloses extraction yield reached 3.49 g/100 g of dry defatted spent coffee after 40 min at 160 °C. The ultrafiltration system allowed concentrating up to 5-fold certain groups of hemicellulose, being most of them retained in the first membrane. Hemicellulose concentration and molecular weight of the feed exerted a great influence on the mass transfer through the membrane due to the formation of aggregates. However, purification through diafiltration allowed both to decrease by-products retentions from 45.6% to 8.7%, increasing the molecular weight of each fraction. Six hemicellulose products were obtained with purities between 83.7 and 97.8 wt% and weight-average molecular weights between 1641 and 49,733 Da.es
dc.format.mimetypeapplication/pdfes
dc.language.isoenges
dc.publisherElsevieres
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subject.classificationCoffeees
dc.subject.classificationPolysaccharidees
dc.titleProduction of molecular weight fractionated hemicelluloses hydrolyzates from spent coffee grounds combining hydrothermal extraction and a multistep ultrafiltration/diafiltrationes
dc.typeinfo:eu-repo/semantics/articlees
dc.rights.holder© 2019 Elsevieres
dc.identifier.doi10.1016/j.biortech.2019.121940es
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0960852419311708?via%3Dihubes
dc.identifier.publicationfirstpage121940es
dc.identifier.publicationtitleBioresource Technologyes
dc.identifier.publicationvolume292es
dc.peerreviewedSIes
dc.description.projectMinisterio de Economía, Industria y Competitividad (Project CTQ2015-64892-R and FEDER)es
dc.description.projectMinisterio de Educación, Cultura y Deportes (reference FPU15/06366)es
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.type.hasVersioninfo:eu-repo/semantics/acceptedVersiones


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