Characterization of Fungal Melanins from Black Stains on Paper Artefacts

Detalhes bibliográficos
Autor(a) principal: Melo, Daniela
Data de Publicação: 2022
Outros Autores: Paiva, Tiago G., Lopes, João A., Corvo, Marta C., Sequeira, Sílvia O.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/145501
Resumo: POCI01-0145-FEDER-007688 2021.03255.CEECIND
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spelling Characterization of Fungal Melanins from Black Stains on Paper Artefactsmelaninfilamentous fungiAspergillus nigerSolid-State NMRMALDI-TOF MSConservationArchaeologyMaterials Science (miscellaneous)POCI01-0145-FEDER-007688 2021.03255.CEECINDMelanins play a fundamental role in the biology and ecology of several fungal species. Unfortunately, this group of amorphous macromolecules also severely (and most times irreversibly) stains cultural heritage objects. Despite efforts made throughout the years, knowledge of the chemical composition and structure of melanins is still insufficient, which hampers the task of safely cleaning these colourants from cultural heritage materials in a targeted way without causing further deterioration. This work aimed therefore to contribute towards enlightening the characteristics of fungal melanins from three fungi that are common paper colonizers: Aspergillus niger, Chaetomium globosum and Cladosporium cladosporioides. The extracted melanins were characterized by FTIR, Raman, UV-vis, Solid-State NMR and MALDI-TOF MS spectroscopies and the effect of inhibitors of DHN-melanin and DOPA-melanin pathways on colony pigmentation and growth was evaluated. Although all the extracted colourants show a predominantly aromatic structure with carbonyl and phenolic groups, some differences between the melanins can be highlighted. Melanins obtained from Ch. globosum and Cl. cladosporioides exhibited similar structures and composition and both presented DHN-melanin characteristics, while A. niger’s melanins revealed a more complex and ordered structure, with a higher prevalence of highly conjugated carbonyls than the others, besides the additional presence of a yellow/green component. These conclusions cannot be overlooked while selecting targeted cleaning methodologies for melanin stains on cultural heritage materials.DCR - Departamento de Conservação e RestauroCENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)DCM - Departamento de Ciência dos MateriaisLAQV@REQUIMTERUNMelo, DanielaPaiva, Tiago G.Lopes, João A.Corvo, Marta C.Sequeira, Sílvia O.2022-11-14T22:10:03Z2022-10-112022-10-11T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article17application/pdfhttp://hdl.handle.net/10362/145501eng2571-9408PURE: 47609598https://doi.org/10.3390/heritage5040158info: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:RCAAP2024-03-11T05:25:55Zoai:run.unl.pt:10362/145501Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:52:06.817278Repositório 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 Characterization of Fungal Melanins from Black Stains on Paper Artefacts
title Characterization of Fungal Melanins from Black Stains on Paper Artefacts
spellingShingle Characterization of Fungal Melanins from Black Stains on Paper Artefacts
Melo, Daniela
melanin
filamentous fungi
Aspergillus niger
Solid-State NMR
MALDI-TOF MS
Conservation
Archaeology
Materials Science (miscellaneous)
title_short Characterization of Fungal Melanins from Black Stains on Paper Artefacts
title_full Characterization of Fungal Melanins from Black Stains on Paper Artefacts
title_fullStr Characterization of Fungal Melanins from Black Stains on Paper Artefacts
title_full_unstemmed Characterization of Fungal Melanins from Black Stains on Paper Artefacts
title_sort Characterization of Fungal Melanins from Black Stains on Paper Artefacts
author Melo, Daniela
author_facet Melo, Daniela
Paiva, Tiago G.
Lopes, João A.
Corvo, Marta C.
Sequeira, Sílvia O.
author_role author
author2 Paiva, Tiago G.
Lopes, João A.
Corvo, Marta C.
Sequeira, Sílvia O.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv DCR - Departamento de Conservação e Restauro
CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)
DCM - Departamento de Ciência dos Materiais
LAQV@REQUIMTE
RUN
dc.contributor.author.fl_str_mv Melo, Daniela
Paiva, Tiago G.
Lopes, João A.
Corvo, Marta C.
Sequeira, Sílvia O.
dc.subject.por.fl_str_mv melanin
filamentous fungi
Aspergillus niger
Solid-State NMR
MALDI-TOF MS
Conservation
Archaeology
Materials Science (miscellaneous)
topic melanin
filamentous fungi
Aspergillus niger
Solid-State NMR
MALDI-TOF MS
Conservation
Archaeology
Materials Science (miscellaneous)
description POCI01-0145-FEDER-007688 2021.03255.CEECIND
publishDate 2022
dc.date.none.fl_str_mv 2022-11-14T22:10:03Z
2022-10-11
2022-10-11T00:00:00Z
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/10362/145501
url http://hdl.handle.net/10362/145501
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2571-9408
PURE: 47609598
https://doi.org/10.3390/heritage5040158
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 17
application/pdf
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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