Tuna skin as bioresource for gelatine: Extraction with ionic liquid

11 pages, 9 figures, 8 tables

Detalhes bibliográficos
Autores: Souto-Montero, Paula, Gallego, Cristina, Vázquez, José Antonio, Rodil, Eva, Soto, Ana
Tipo de documento: artigo
Estado:Versión aceptada para publicación
Data de publicação:2025
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/382635
Acesso em linha:http://hdl.handle.net/10261/382635
Access Level:Acesso embargado
Palavra-chave:Gelatine
Fish skin
Maceration
Ionic liquid
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spelling Tuna skin as bioresource for gelatine: Extraction with ionic liquidSouto-Montero, PaulaGallego, CristinaVázquez, José AntonioRodil, EvaSoto, AnaGelatineFish skinMacerationIonic liquid11 pages, 9 figures, 8 tablesUnlocking the ocean’s full potential requires converting fish waste into materials and products of interest, thus improving the circularity and sustainability of the fish processing industry. Fish skin is an excellent bioresource for obtaining gelatine, a product of high interest in many industries due to its multifunctionality. The current extraction methods involve several stages with harsh chemicals, which pose environmental concerns. In this work, an innovative method consisting of maceration with ionic liquid and extraction with water is proposed. Unlike other methods based on ionic liquids or deep eutectic solvents that focus on dissolving the fish by-product, and therefore require an energy-intensive stage to recover the protein, a non-dissolving treatment is proposed to facilitate protein extraction with water. The gelatine is precipitated from the aqueous solution by adding acetone. The method was tested obtaining gelatine from tuna skin and using 1-ethyl-3-methylimidazolium acetate, a low toxicity ionic liquid able to disrupt the skin through hydrogen bonding. Optimised conditions led to a recovery yield of 0.188 g gelatine/g wet skin. FTIR showed the characteristic bands corresponding to molecular vibrations and functional groups of the gelatine structure. α- and β-chains constitute approximately the 43 % of the product, with the remainder being peptides with an average molecular weight of 44 kDa. The pyrrolidine amino acids content was 21 %. The gelatine showed good thermal stability. Melting and gelling temperature (20.6 and 12.9 °C, respectively) fall within the typical range for warm water fish. As an advantage in comparison to classical methods, the proposed method avoids the need of multiple treatment steps with strong acids and alkalisGrant PID2021-123622OB-I00 funded by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe” by the European Union. Author from IIM-CSIC is grateful to Xunta de Galicia (GPC_IN607B 2024/010) for fundingPeer reviewedElsevierEuropean CommissionXunta de GaliciaMinisterio de Ciencia e Innovación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/382635reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-123622OB-I00The underlying dataset has been published as supplementary material of the article in the publishers platform at DOI https://doi.org/10.1016/j.seppur.2025.132144https://doi.org/10.1016/j.seppur.2025.132144Síinfo:eu-repo/semantics/embargoedAccessoai:digital.csic.es:10261/3826352026-05-22T06:33:51Z
dc.title.none.fl_str_mv Tuna skin as bioresource for gelatine: Extraction with ionic liquid
title Tuna skin as bioresource for gelatine: Extraction with ionic liquid
spellingShingle Tuna skin as bioresource for gelatine: Extraction with ionic liquid
Souto-Montero, Paula
Gelatine
Fish skin
Maceration
Ionic liquid
title_short Tuna skin as bioresource for gelatine: Extraction with ionic liquid
title_full Tuna skin as bioresource for gelatine: Extraction with ionic liquid
title_fullStr Tuna skin as bioresource for gelatine: Extraction with ionic liquid
title_full_unstemmed Tuna skin as bioresource for gelatine: Extraction with ionic liquid
title_sort Tuna skin as bioresource for gelatine: Extraction with ionic liquid
dc.creator.none.fl_str_mv Souto-Montero, Paula
Gallego, Cristina
Vázquez, José Antonio
Rodil, Eva
Soto, Ana
author Souto-Montero, Paula
author_facet Souto-Montero, Paula
Gallego, Cristina
Vázquez, José Antonio
Rodil, Eva
Soto, Ana
author_role author
author2 Gallego, Cristina
Vázquez, José Antonio
Rodil, Eva
Soto, Ana
author2_role author
author
author
author
dc.contributor.none.fl_str_mv European Commission
Xunta de Galicia
Ministerio de Ciencia e Innovación (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Gelatine
Fish skin
Maceration
Ionic liquid
topic Gelatine
Fish skin
Maceration
Ionic liquid
description 11 pages, 9 figures, 8 tables
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/382635
url http://hdl.handle.net/10261/382635
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-123622OB-I00
The underlying dataset has been published as supplementary material of the article in the publishers platform at DOI https://doi.org/10.1016/j.seppur.2025.132144
https://doi.org/10.1016/j.seppur.2025.132144
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/embargoedAccess
eu_rights_str_mv embargoedAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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