Integrated valorization of Sargassum muticum in biorefineries

Marine macroalgae represent an excellent raw material for the production of bioactives, adsorbents, plant biostimulants, soil fertilizers and biogas. The success in the exploitation of seaweeds depends on their characteristics, and the approach used to separate their specific active components. In t...

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Autores: Flórez-Fernández, Noelia, Illera, Marta, Sánchez Núñez, Marta, Lodeiro, Pablo, Torres Pérez, María Dolores, López Mosquera, Ma Elvira, Soto Castiñeira, Manuel, Sastre de Vicente, Manuel E., Domínguez González, Herminia
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2021
País:España
Institución:Universitat de Lleida (UdL)
Repositorio:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/70618
Acceso en línea:https://doi.org/10.1016/j.cej.2020.125635
http://hdl.handle.net/10459.1/70618
Access Level:acceso abierto
Palabra clave:Seaweed
Biorefinery
Biostimulants
Biogas
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spelling Integrated valorization of Sargassum muticum in biorefineriesFlórez-Fernández, NoeliaIllera, MartaSánchez Núñez, MartaLodeiro, PabloTorres Pérez, María DoloresLópez Mosquera, Ma ElviraSoto Castiñeira, ManuelSastre de Vicente, Manuel E.Domínguez González, HerminiaSeaweedBiorefineryBiostimulantsBiogasMarine macroalgae represent an excellent raw material for the production of bioactives, adsorbents, plant biostimulants, soil fertilizers and biogas. The success in the exploitation of seaweeds depends on their characteristics, and the approach used to separate their specific active components. In the context of circular economy, invasive species are a good candidate for exploitation, and biorefinery a key valorization technique. Here we investigate a novel biorefinery scheme for an integral valorization of Sargassum muticum. An initial pressing stage allowed the production of a Sap fraction, which showed potential as a plant biostimulant, increasing both root development and shoot/root ratio, especially when used at a dose of 0.1 g/L lyophilized Sap. The solids after pressing were processed by non isothermal autohydrolysis, using pressurized hot water (up to 120-210 °C), a process previously optimized to solubilize the fucoidan and phlorotannin fractions. The residual solids remaining after pressing and autohydrolysis stages were evaluated for the production of biogas. The obtained value (150 mL CH4/g residual solids at 150 °C) was significantly higher than that found for the raw seaweed. The optimal autohydrolysis temperature (150 °C) is compatible with the production of the fucoidan fraction, although the phenolic content is favoured under more severe operation conditions. We also discuss the possibility of preparing adsorbents for pollutant removal and mineral amendments from the autohydrolysis waste solids.The authors are grateful to the Spanish Ministry of Education and Science (CTM2009-12664) and to Xunta de Galicia (CINBIO Centro singular de investigación de Galicia accreditation 2019-2022) with partial financial support from the European Regional Development Fund – ERDF (Ref. ED431G2019/06). M.D.T. thanks Spanish Ministry of Economy and Competitiveness for her postdoctoral grant (IJCI-2016-27535 and RYC2018-024454-I). N.F.F. thanks CINBIO and Xunta de Galicia for her postdoctoral contract (ED481B 2018/071).MICINN/PN2008-2011/CTM2009-12664Elsevier2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://doi.org/10.1016/j.cej.2020.125635http://hdl.handle.net/10459.1/70618reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)Inglésinfo:eu-repo/grantAgreement/MICINN//CTM2009-12664Versió postprint del document publicat a: https://doi.org/10.1016/j.cej.2020.125635Chemical Engineering Journal, 2021, vol. 404, num. 125635cc-by-nc-nd, (c) Elsevier, 2020info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/3.0/esoai:repositori.udl.cat:10459.1/706182026-06-24T12:42:17Z
dc.title.none.fl_str_mv Integrated valorization of Sargassum muticum in biorefineries
title Integrated valorization of Sargassum muticum in biorefineries
spellingShingle Integrated valorization of Sargassum muticum in biorefineries
Flórez-Fernández, Noelia
Seaweed
Biorefinery
Biostimulants
Biogas
title_short Integrated valorization of Sargassum muticum in biorefineries
title_full Integrated valorization of Sargassum muticum in biorefineries
title_fullStr Integrated valorization of Sargassum muticum in biorefineries
title_full_unstemmed Integrated valorization of Sargassum muticum in biorefineries
title_sort Integrated valorization of Sargassum muticum in biorefineries
dc.creator.none.fl_str_mv Flórez-Fernández, Noelia
Illera, Marta
Sánchez Núñez, Marta
Lodeiro, Pablo
Torres Pérez, María Dolores
López Mosquera, Ma Elvira
Soto Castiñeira, Manuel
Sastre de Vicente, Manuel E.
Domínguez González, Herminia
author Flórez-Fernández, Noelia
author_facet Flórez-Fernández, Noelia
Illera, Marta
Sánchez Núñez, Marta
Lodeiro, Pablo
Torres Pérez, María Dolores
López Mosquera, Ma Elvira
Soto Castiñeira, Manuel
Sastre de Vicente, Manuel E.
Domínguez González, Herminia
author_role author
author2 Illera, Marta
Sánchez Núñez, Marta
Lodeiro, Pablo
Torres Pérez, María Dolores
López Mosquera, Ma Elvira
Soto Castiñeira, Manuel
Sastre de Vicente, Manuel E.
Domínguez González, Herminia
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Seaweed
Biorefinery
Biostimulants
Biogas
topic Seaweed
Biorefinery
Biostimulants
Biogas
description Marine macroalgae represent an excellent raw material for the production of bioactives, adsorbents, plant biostimulants, soil fertilizers and biogas. The success in the exploitation of seaweeds depends on their characteristics, and the approach used to separate their specific active components. In the context of circular economy, invasive species are a good candidate for exploitation, and biorefinery a key valorization technique. Here we investigate a novel biorefinery scheme for an integral valorization of Sargassum muticum. An initial pressing stage allowed the production of a Sap fraction, which showed potential as a plant biostimulant, increasing both root development and shoot/root ratio, especially when used at a dose of 0.1 g/L lyophilized Sap. The solids after pressing were processed by non isothermal autohydrolysis, using pressurized hot water (up to 120-210 °C), a process previously optimized to solubilize the fucoidan and phlorotannin fractions. The residual solids remaining after pressing and autohydrolysis stages were evaluated for the production of biogas. The obtained value (150 mL CH4/g residual solids at 150 °C) was significantly higher than that found for the raw seaweed. The optimal autohydrolysis temperature (150 °C) is compatible with the production of the fucoidan fraction, although the phenolic content is favoured under more severe operation conditions. We also discuss the possibility of preparing adsorbents for pollutant removal and mineral amendments from the autohydrolysis waste solids.
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.cej.2020.125635
http://hdl.handle.net/10459.1/70618
url https://doi.org/10.1016/j.cej.2020.125635
http://hdl.handle.net/10459.1/70618
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MICINN//CTM2009-12664
Versió postprint del document publicat a: https://doi.org/10.1016/j.cej.2020.125635
Chemical Engineering Journal, 2021, vol. 404, num. 125635
dc.rights.none.fl_str_mv cc-by-nc-nd, (c) Elsevier, 2020
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/3.0/es
rights_invalid_str_mv cc-by-nc-nd, (c) Elsevier, 2020
http://creativecommons.org/licenses/by-nc-nd/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositori Obert UdL
instname:Universitat de Lleida (UdL)
instname_str Universitat de Lleida (UdL)
reponame_str Repositori Obert UdL
collection Repositori Obert UdL
repository.name.fl_str_mv
repository.mail.fl_str_mv
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