Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/73314
Registo completo
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Pagels, Fernando | por |
dc.contributor.author | Pereira, Ricardo Nuno Correia | por |
dc.contributor.author | Amaro, Helena M. | por |
dc.contributor.author | Vasconcelos, Vítor | por |
dc.contributor.author | Guedes, A. Catarina | por |
dc.contributor.author | Vicente, A. A. | por |
dc.date.accessioned | 2021-06-09T22:38:07Z | - |
dc.date.available | 2021-06-09T22:38:07Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Pagels, Fernando; Pereira, Ricardo N.; Amaro, Helena M.; Vasconcelos, Vítor; A. Catarina Guedes; Vicente, António A., Continuous pressurized extraction versus electric fields-assisted extraction of cyanobacterial pigments. Journal of Biotechnology, 334, 35-42, 2021 | por |
dc.identifier.issn | 01681656 | por |
dc.identifier.uri | https://hdl.handle.net/1822/73314 | - |
dc.description.abstract | Cyanobacteria pigments, in special carotenoids and phycobiliproteins, are usually used in industry as raw extracts, although there is still no standard methodology for their extraction. For the co-extraction of carotenoids and phycobiliproteins from the marine cyanobacterium Cyanobium sp., a continuous pressurized solvent extraction (CPSE) system and an electric fields-assisted extraction system based in ohmic heating were optimized using Central Composite Designs, with three factors each: time (t), temperature (T) and, flow (f) for CPSE; and time, temperature and frequency (F) for ohmic heating. The content of pigments and the antioxidant capacity of extracts were evaluated. All tested factors seem to influence the extraction of pigments in different ways: a high temperature (70 °C) had a positive impact on the extraction rate in both methods, while the influence of time depended on the extraction principle. Flow and frequency affected directly the extraction efficiency and these methods are indeed suitable for cyanobacterial pigments extraction, achieving good extraction results. Optimal conditions for co-extraction of carotenoids and phycobiliproteins in CPSE were T=70 °C, t=20 min and f=1.5 mL min1, and for ohmic heating they were T=70 °C, t=5 min and F=20 kHz. Both, CPSE and ohmic heating systems allowed obtaining better extraction yields when compared with a previously optimized extraction method (homogenization), used here as a reference. However, ohmic heating was the best methodology for pigments co-extraction from Cyanobium sp. | por |
dc.description.sponsorship | A PhD fellowship (reference SFRH/BD/136767/2018) for author Fernando Pagels was granted by Fundação ˜ para a Ciencia e Tecnologia (FCT, Portugal) under the auspices of Programa Operacional Capital Humano (POCH), supported by the European Social Fund and Portuguese funds (MECTES). This work was financially co-supported by the strategical funding from FCT UIDB/04423/2020, UIDP/04423/2020 and UIDB/04469/2020; and the project ALGAVALOR - MicroALGAs: producã̧o integrada e VALORizacã̧o da biomassa e das suas diversas aplicacõ̧es (POCI-01-0247-FEDER-035234), supported by the European Regional Development Fund and BioTecNorte operation (NORTE-01- 0145-FEDER-000004) funded by the European Regional Development Fund under the scope of Norte2020 - Programa Operacional Regional do Norte. | por |
dc.language.iso | eng | por |
dc.publisher | Elsevier 1 | por |
dc.relation | SFRH/BD/136767/2018 | por |
dc.relation | UIDB/04423/2020 | por |
dc.relation | UIDP/04423/2020 | por |
dc.relation | UIDB/04469/2020 | por |
dc.rights | openAccess | por |
dc.subject | Carotenoids | por |
dc.subject | Phycobiliproteins | por |
dc.subject | Ohmic heating | por |
dc.subject | Pressurized solvent extraction | por |
dc.subject | Cyanobiumsp. | por |
dc.title | Continuous pressurized extraction versus electric fields-assisted extraction of cyanobacterial pigments | por |
dc.type | article | - |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | http://www.elsevier.com/locate/issn/01681656 | por |
dc.comments | CEB54460 | por |
oaire.citationStartPage | 35 | por |
oaire.citationEndPage | 42 | por |
oaire.citationConferencePlace | Netherlands | - |
oaire.citationVolume | 334 | por |
dc.date.updated | 2021-06-09T11:19:35Z | - |
dc.identifier.doi | 10.1016/j.jbiotec.2021.05.004 | por |
dc.identifier.pmid | 34029613 | por |
dc.description.publicationversion | info:eu-repo/semantics/publishedVersion | - |
dc.subject.wos | Science & Technology | por |
sdum.journal | Journal of Biotechnology | por |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
document_54460_1.pdf | 2,5 MB | Adobe PDF | Ver/Abrir |