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Estimation of alginate purity and M/G ratio by methanolysis coupled with anion exchange chromatography

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Estimation of alginate purity and M/G ratio by methanolysis coupled with anion exchange chromatography

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dc.contributor.author Bojorges-Gutierrez, Hylenne es_ES
dc.contributor.author López-Rubio, Amparo es_ES
dc.contributor.author Fabra Rovira, Maria José es_ES
dc.contributor.author Martínez-Abad, Antonio es_ES
dc.date.accessioned 2024-09-24T18:06:02Z
dc.date.available 2024-09-24T18:06:02Z
dc.date.issued 2023-12-01 es_ES
dc.identifier.issn 0144-8617 es_ES
dc.identifier.uri http://hdl.handle.net/10251/208608
dc.description.abstract [EN] Alginates are industrially relevant polysaccharides widely used in the food and biomedical industries for their excellent gelling properties. The growing emphasis on the valorization of marine resources has evidenced the need for alternative methods for the determination of both alginate content and the M/G ratio. This study describes the application of acid methanolysis and separation by anion exchange chromatography. Five samples, including alginates extracted from Saccharina latissima, Ascophyllum nodosum, a certified standard, and two polyuronates (Poly-M and Poly-G), were analysed for their M/G ratio and alginate content at different treatment conditions, and compared with other conventionally used or reference methods (NMR, FTIR, and colorimetric methods). Quantitative estimation of alginate was relatively accurate at optimum conditions (4 h at 100 ¿C), as compared with the certified standard or with other colorimetric methods. M/G ratios were not significantly different from those determined after the reference method ( 1 H NMR) or compared to FTIR protocols. The results evidence that methanolysis may be applied to simultaneously estimate the purity and M/G ratio of alginate-rich samples in a single analysis. es_ES
dc.description.sponsorship The authors acknowledge funds from the project PID2020-117744RJ-I00, grant CEX2021-001189-S funded by MCIN/AEI/10.13039/501100011033 and project CIRCALGAE (Horizon Europe) under grant agreement 101060607. H. Bojorges acknowledges financial support from the Generalitat Valenciana for the award of a Santiago Grisolía grant (GRISOLIAP/2019/007). es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Carbohydrate Polymers es_ES
dc.rights Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) es_ES
dc.subject Alginate es_ES
dc.subject HPAEC-PAD es_ES
dc.subject NMR spectroscopy es_ES
dc.subject Uronic acid determination es_ES
dc.title Estimation of alginate purity and M/G ratio by methanolysis coupled with anion exchange chromatography es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.carbpol.2023.121285 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-117744RJ-I00/ES/DESARROLLO DE UN NUEVO PROCESO DE EXTRACCION EN CASCADA PARA LA VALORIZACION INTEGRAL DE ALGAS EN INGREDIENTES FUNCIONALES PARA APLICACIONES ALIMENTARIAS/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/EC/HE/101060607/EU/CIRCular valorisation of industrial ALGAE waste streams into high-value products to foster future sustainable blue biorefineries in Europe/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/GVA//GRISOLIAP%2F2019%2F007//Subvenciones del Programa Santiago Grisolía/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/AEI//CEX2021-001189-S/ es_ES
dc.rights.accessRights Abierto es_ES
dc.description.bibliographicCitation Bojorges-Gutierrez, H.; López-Rubio, A.; Fabra Rovira, MJ.; Martínez-Abad, A. (2023). Estimation of alginate purity and M/G ratio by methanolysis coupled with anion exchange chromatography. Carbohydrate Polymers. 321. https://doi.org/10.1016/j.carbpol.2023.121285 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https:/doi.org/10.1016/j.carbpol.2023.121285 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 321 es_ES
dc.identifier.pmid 37739498 es_ES
dc.relation.pasarela S\509443 es_ES
dc.contributor.funder European Commission es_ES
dc.contributor.funder Generalitat Valenciana es_ES
dc.contributor.funder Agencia Estatal de Investigación es_ES


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