2026-04-20T14:59:27Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/62822022-12-02T13:08:56Zcom_10259_4244com_10259_5086com_10259_2604col_10259_4245

Trigueros Andrés, Ester 557 600 0000-0003-1701-0523 Alonso Riaño, Patricia 596 500 0000-0003-4765-5859 Ramos Rodríguez, Cipriano 464 600 0000-0001-9099-8633 Diop, Cherif Ibrahima Khalil 599 500 0000-0002-8029-9756 Beltrán Calvo, Sagrario 57 600 0000-0003-2559-3925 Sanz Díez, Mª Teresa 530 600 0000-0003-1799-3099 2021-12-13T15:18:11Z 2021-12-13T15:18:11Z 2021-12 2213-3437 http://hdl.handle.net/10259/6282 10.1016/j.jece.2021.106768 The valorization of the underexploited solid residue after agar extraction from red marine algae was studied by subcritical water treatment. Experiments were carried out in two different semi-continuous fix-bed reactor configurations at 185 ºC at different subcritical water residence times. The use of a by-pass section allowed to heat the water previous contact to the biomass, avoiding the exposure of the sample to high temperatures during the heating procedure and reducing the formation of degradation products. Higher hydrolysis yields were obtained for the protein fraction (reaching 96.1%) than for the carbohydrate fraction (reaching 45.7%, 11.3%, 27.5% and 57.6% for galactans, glucans, arabinans and uronic acids, respectively). With the decrease of the residence time, by increasing the flow rate, higher initial hydrolysis rates were obtained due to enhancing diffusion of the hydrolysis products into the bulk solution. It was determined a similar dependence of the initial hydrolysis rates on the residence time for the carbohydrate oligomers and total protein fraction, but the release of free amino acids was less dependent on increasing flow rate due to higher diffusion coefficients for small molecules. Agencia Estatal de Investigación (Spain) [grant number PID2019–104950RB-I00 / AEI / 10.13039/501100011033], the Junta de Castilla y León (JCyL) and the European Regional Development Fund (ERDF) [grant numbers BU301P18 and BU050P20] E. Trigueros and P. Alonso-Riaño predoctoral contracts were funded by the JCyL and the European Social Fund (ESF) by ORDEN EDU/574/2018, de 28 de mayo and ORDEN EDU/556/2019, de 5 de junio, respectively. The C. I. K. Diop contract was funded by the European Commission, Horizon 2020 program through the Marie-Curie Individual Fellowship (H2020-MSCA-IF-2019), with regards to the ALGWAS-BIOR project (Grant agreement number 898804). application/pdf eng Elsevier Journal of Environmental Chemical Engineering. 2021, V. 9, n. 6, 106768 https://doi.org/10.1016/j.jece.2021.106768 info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-104950RB-I00/ES/VALORIZACION DE SUBPRODUCTOS MARINOS MEDIANTE TECNOLOGIAS DE FLUIDOS SUB- Y SUPERCRITICOS PARA LA OBTENCION DE BIOCOMPUESTOS VALIOSOS info:eu-repo/grantAgreement/Junta de Castilla y León//BU301P18//Valorización integral de subproductos de la industria agroalimentaria mediante tecnologías emergentes (ALVALOR) info:eu-repo/grantAgreement/Junta de Castilla y León//BU050P20//Valorización de la fracción proteica de subproductos de la industria agroalimentaria de Castilla y León mediante tecnologías de fluidos presurizados info:eu-repo/grantAgreement/EC/H2020/898804/EU/Sustainable Valorization Of The Algae Industry Waste-Stream Within An Advanced Clean Technologies-Based Integrated Biorefinery Concept Atribución 4.0 Internacional http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Subcritical water hydrolysis (subW) Heating Residence time Biorefinery Macroalgae by-products Bio compounds Ingeniería química Chemical engineering Kinetic study of the semi-continuous extraction/hydrolysis of the protein and polysaccharide fraction of the industrial solid residue from red macroalgae by subcritical water info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion THUMBNAIL Trigueros-jece_2021.pdf.jpg Trigueros-jece_2021.pdf.jpg IM Thumbnail image/jpeg 3658 https://riubu.ubu.es/bitstream/10259/6282/4/Trigueros-jece_2021.pdf.jpg 174f23e6c4ae2239894d66843f014f71 MD5 4 LICENSE license.txt license.txt text/plain; charset=utf-8 998 https://riubu.ubu.es/bitstream/10259/6282/3/license.txt aa90105e1c90a1b4fe810649aa967b7d MD5 3 CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 908 https://riubu.ubu.es/bitstream/10259/6282/2/license_rdf 0175ea4a2d4caec4bbcc37e300941108 MD5 2 ORIGINAL Trigueros-jece_2021.pdf Trigueros-jece_2021.pdf application/pdf 1111248 https://riubu.ubu.es/bitstream/10259/6282/1/Trigueros-jece_2021.pdf cde23cb4299c1e6c77e50898e5404d78 MD5 1 10259/6282 oai:riubu.ubu.es:10259/6282 2022-12-02 14:08:56.532 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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