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Drying process, storage conditions, and time alter the biochemical composition and bioactivity of the anti-greenhouse seaweed Asparagopsis taxiformis

2020Journal article Open access
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dc.contributor.authorRegal, A.L.
dc.contributor.authorDelgado Alves, Vitor
dc.contributor.authorGomes, R.
dc.contributor.authorMatos, J.
dc.contributor.authorBandarra, N.M.
dc.contributor.authorAfonso, C.
dc.contributor.authorCardoso, C.
dc.date.accessioned2021-09-29T11:38:46Z
dc.date.available2021-09-29T11:38:46Z
dc.date.issued2020
dc.description.abstractThe Azorean red seaweed Asparagopsis taxiformis may be used in human and animal diets. This seaweed is deemed to reduce the large production of methane—a major greenhouse gas—by ruminant digestion. Seaweed producers, however, have difficulties in ensuring a reliable and similar product throughout all year and in different years. Changes in biochemical composition and bioactivity are caused not only by natural variability, but also by the particular drying process, storage conditions, and storage time. Regarding the drying process, oven-dried samples had a lower EPA content, 1.9 ± 0.2% of the total FAs, than freeze-dried samples, 8.6 ± 1.7%. The same occurred with the phenolic contents and particularly with the ethanolic extracts. ABTS antioxidant activity results showed freeze-drying as advantageous. With respect to storage temperature, anti-inflammatory activity was higher in A. taxiformis at room temperature after three month storage. Moreover, EPA content in freeze-dried samples decreased to 0.3–1.0% after three month storage. Phenolic content in the ethanolic extracts also declined over storage time. In the case of aqueous extracts, however, variation was in the opposite direction. Antioxidant activity as measured by ABTS showed for almost all samples and types of extracts an increasing trend over time: from 0.26–1.75 to 0.75–4.40 mmol Trolox Eq/100 g dw. Anti-inflammatory activity increased over time from < 30% COX-2 inhibition at the beginning of the trial to > 30% COX-2 inhibition after three month storage. Therefore, there is a relevant bioactive potential in A. taxiformis and the drying process and storage conditions and time affect this potentialpt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationRegal, A.L., Alves, V., Gomes, R. et al. Drying process, storage conditions, and time alter the biochemical composition and bioactivity of the anti-greenhouse seaweed Asparagopsis taxiformis. Eur Food Res Technol 246, 781–793 (2020)pt_PT
dc.identifier.doihttps://doi.org/10.1007/s00217-020-03445-8pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.5/22097
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.subjectAsparagopsis taxiformispt_PT
dc.subjectdrying processpt_PT
dc.subjectstorage conditions and timept_PT
dc.subjectfatty acid profilept_PT
dc.subjectantioxidant activitypt_PT
dc.subjectanti-inflammatory activitypt_PT
dc.titleDrying process, storage conditions, and time alter the biochemical composition and bioactivity of the anti-greenhouse seaweed Asparagopsis taxiformispt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/40214/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/154705/PT
oaire.citation.titleEuropean Food Research and Technologypt_PT
oaire.fundingStreamOE
oaire.fundingStream6817 - DCRRNI ID
person.familyNameDelgado Alves
person.givenNameVitor
person.identifier1916677
person.identifier.ciencia-id2E1E-6918-4DB3
person.identifier.orcid0000-0002-4117-5582
person.identifier.scopus-author-id24536716000
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication8d1a8489-8789-4569-89e2-0bade23dd945
relation.isAuthorOfPublication.latestForDiscovery8d1a8489-8789-4569-89e2-0bade23dd945
relation.isProjectOfPublication3cd14676-200e-4586-b1cc-826db5fc8e4b
relation.isProjectOfPublication6de3968e-a03b-49d8-92b9-151e21b9a4b7
relation.isProjectOfPublication.latestForDiscovery3cd14676-200e-4586-b1cc-826db5fc8e4b

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