Microalgae-based unsaponifiable matter as source of natural antioxidants and metal chelators to enhance the value of wet Tetraselmis chuii biomass
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.1/14656 |
Resumo: | The present work aimed to determine the antioxidant, metal chelating and neuroprotective potential of the unsaponifiable matter (UM) of Tetraselmis chuii to be applied to a biorefinery setting. The UM obtained via saponification from crude lipids extracted from microalgal wet biomass showed a radical scavenging activity (RSA) towards the DPPH radical of 90.7 +/- 1.3% and 57.1 +/- 1.2% at a concentration of 10 and 5 mg/ mL, respectively. The UM fraction also displayed metal chelating capacity at a concentration of 5 mg/ mL: 58.5 +/- 1.4% and 50.9 +/- 4.0% for copper and iron, respectively. The chemical characterization of the UM revealed significant levels of total phenolics (TPC, 13.61 mg GAE/g) and carotenoids (2.45 mg/g of beta-carotene, lutein and violaxanthin). Overall, the separation of the UM containing high value metabolites might significantly upgrade the total wet biomass value in a biorefinery, allowing the exploitation of a stream with relevant antioxidant and metal chelating activities. |
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Microalgae-based unsaponifiable matter as source of natural antioxidants and metal chelators to enhance the value of wet Tetraselmis chuii biomassTetraselmis chuiiUnsaponifiable matterAntioxidantsMetal chelatorsPhenolicsThe present work aimed to determine the antioxidant, metal chelating and neuroprotective potential of the unsaponifiable matter (UM) of Tetraselmis chuii to be applied to a biorefinery setting. The UM obtained via saponification from crude lipids extracted from microalgal wet biomass showed a radical scavenging activity (RSA) towards the DPPH radical of 90.7 +/- 1.3% and 57.1 +/- 1.2% at a concentration of 10 and 5 mg/ mL, respectively. The UM fraction also displayed metal chelating capacity at a concentration of 5 mg/ mL: 58.5 +/- 1.4% and 50.9 +/- 4.0% for copper and iron, respectively. The chemical characterization of the UM revealed significant levels of total phenolics (TPC, 13.61 mg GAE/g) and carotenoids (2.45 mg/g of beta-carotene, lutein and violaxanthin). Overall, the separation of the UM containing high value metabolites might significantly upgrade the total wet biomass value in a biorefinery, allowing the exploitation of a stream with relevant antioxidant and metal chelating activities.SFRH/BD/105541/2014, IF/00049/2012, CCMAR/Multi/04326/2013De Gruyter OpenSapientiaGangadhar N. Katkam, Dr.H., PereiraRodrigues, Maria JoãoL, CustódioBarreira, LuísaMalcata, F. XavierJ. C. or Varela J. or Varela J.C.S., Varela2020-08-31T16:34:05Z20162016-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/14656eng2391-542010.1515/chem-2016-0029info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-24T10:26:59Zoai:sapientia.ualg.pt:10400.1/14656Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:05:39.531433Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Microalgae-based unsaponifiable matter as source of natural antioxidants and metal chelators to enhance the value of wet Tetraselmis chuii biomass |
title |
Microalgae-based unsaponifiable matter as source of natural antioxidants and metal chelators to enhance the value of wet Tetraselmis chuii biomass |
spellingShingle |
Microalgae-based unsaponifiable matter as source of natural antioxidants and metal chelators to enhance the value of wet Tetraselmis chuii biomass Gangadhar N. Katkam, Dr. Tetraselmis chuii Unsaponifiable matter Antioxidants Metal chelators Phenolics |
title_short |
Microalgae-based unsaponifiable matter as source of natural antioxidants and metal chelators to enhance the value of wet Tetraselmis chuii biomass |
title_full |
Microalgae-based unsaponifiable matter as source of natural antioxidants and metal chelators to enhance the value of wet Tetraselmis chuii biomass |
title_fullStr |
Microalgae-based unsaponifiable matter as source of natural antioxidants and metal chelators to enhance the value of wet Tetraselmis chuii biomass |
title_full_unstemmed |
Microalgae-based unsaponifiable matter as source of natural antioxidants and metal chelators to enhance the value of wet Tetraselmis chuii biomass |
title_sort |
Microalgae-based unsaponifiable matter as source of natural antioxidants and metal chelators to enhance the value of wet Tetraselmis chuii biomass |
author |
Gangadhar N. Katkam, Dr. |
author_facet |
Gangadhar N. Katkam, Dr. H., Pereira Rodrigues, Maria João L, Custódio Barreira, Luísa Malcata, F. Xavier J. C. or Varela J. or Varela J.C.S., Varela |
author_role |
author |
author2 |
H., Pereira Rodrigues, Maria João L, Custódio Barreira, Luísa Malcata, F. Xavier J. C. or Varela J. or Varela J.C.S., Varela |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Sapientia |
dc.contributor.author.fl_str_mv |
Gangadhar N. Katkam, Dr. H., Pereira Rodrigues, Maria João L, Custódio Barreira, Luísa Malcata, F. Xavier J. C. or Varela J. or Varela J.C.S., Varela |
dc.subject.por.fl_str_mv |
Tetraselmis chuii Unsaponifiable matter Antioxidants Metal chelators Phenolics |
topic |
Tetraselmis chuii Unsaponifiable matter Antioxidants Metal chelators Phenolics |
description |
The present work aimed to determine the antioxidant, metal chelating and neuroprotective potential of the unsaponifiable matter (UM) of Tetraselmis chuii to be applied to a biorefinery setting. The UM obtained via saponification from crude lipids extracted from microalgal wet biomass showed a radical scavenging activity (RSA) towards the DPPH radical of 90.7 +/- 1.3% and 57.1 +/- 1.2% at a concentration of 10 and 5 mg/ mL, respectively. The UM fraction also displayed metal chelating capacity at a concentration of 5 mg/ mL: 58.5 +/- 1.4% and 50.9 +/- 4.0% for copper and iron, respectively. The chemical characterization of the UM revealed significant levels of total phenolics (TPC, 13.61 mg GAE/g) and carotenoids (2.45 mg/g of beta-carotene, lutein and violaxanthin). Overall, the separation of the UM containing high value metabolites might significantly upgrade the total wet biomass value in a biorefinery, allowing the exploitation of a stream with relevant antioxidant and metal chelating activities. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016 2016-01-01T00:00:00Z 2020-08-31T16:34:05Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.1/14656 |
url |
http://hdl.handle.net/10400.1/14656 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2391-5420 10.1515/chem-2016-0029 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
De Gruyter Open |
publisher.none.fl_str_mv |
De Gruyter Open |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799133296820486144 |