Enzymatic dyeing of wool

Detalhes bibliográficos
Autor(a) principal: Tzanov, Tzanko
Data de Publicação: 2002
Outros Autores: Silva, Carla J. S. M., Zille, Andrea, Oliveira, Jovita, Paulo, Artur Cavaco
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/25241
Resumo: This study reports for the dyeing of wool using an enzymatic system comprising laccase (EC 1.10.3.2), dye precursor - 2,5-diaminobenzenesulfonic acid and dye modifiers – cathehol and resorcinol. The effect of the process variables - reaction time, enzyme and modifiers concentration on fabrics colour was studied, according to an appropriate experimental design. Different hues and depth of shades could be achieved varying the concentration of the modifiers and the time of laccase treatment. The duration of the enzymatic reaction appeared to be the most important factor in the dyeing process. Thus the dyeing process, performed at low temperature and mild pH, was advantageous in terms of reduced enzyme and chemicals dosage. The ability of the laccases to generate colour “in situ” from originally non-coloured, low-molecular substances, appears as an alternative to the conventional dyeing processes. The dye precursors can be used alone or in combination with suitable modifier (coupler) – another phenolic compound, which together with the dye precursor will enlarge the colour pallet achieved in the enzymatic dyeing.
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spelling Enzymatic dyeing of woolLaccaseWoolThis study reports for the dyeing of wool using an enzymatic system comprising laccase (EC 1.10.3.2), dye precursor - 2,5-diaminobenzenesulfonic acid and dye modifiers – cathehol and resorcinol. The effect of the process variables - reaction time, enzyme and modifiers concentration on fabrics colour was studied, according to an appropriate experimental design. Different hues and depth of shades could be achieved varying the concentration of the modifiers and the time of laccase treatment. The duration of the enzymatic reaction appeared to be the most important factor in the dyeing process. Thus the dyeing process, performed at low temperature and mild pH, was advantageous in terms of reduced enzyme and chemicals dosage. The ability of the laccases to generate colour “in situ” from originally non-coloured, low-molecular substances, appears as an alternative to the conventional dyeing processes. The dye precursors can be used alone or in combination with suitable modifier (coupler) – another phenolic compound, which together with the dye precursor will enlarge the colour pallet achieved in the enzymatic dyeing.European Cooperation in Science and Technology (COST)Universidade do MinhoTzanov, TzankoSilva, Carla J. S. M.Zille, AndreaOliveira, JovitaPaulo, Artur Cavaco2002-102002-10-01T00:00:00Zconference posterinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/1822/25241engTzanov, T.; Silva, Carla J.; Zille, Andrea; GUBITZ, G; Artur, Cavaco-Paulo. Effect of the process parameters in enzymatic dyeing of wool, Trabalho apresentado em COST action 847 Mid term evaluation meeting, In Cost action final report, Como, 2002.http://www.cost.eu/domains_actions/fa/Actions/Textile_Quality_and_Biotechnologyinfo: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:RCAAP2024-05-11T06:36:03Zoai:repositorium.sdum.uminho.pt:1822/25241Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-11T06:36:03Repositório 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 Enzymatic dyeing of wool
title Enzymatic dyeing of wool
spellingShingle Enzymatic dyeing of wool
Tzanov, Tzanko
Laccase
Wool
title_short Enzymatic dyeing of wool
title_full Enzymatic dyeing of wool
title_fullStr Enzymatic dyeing of wool
title_full_unstemmed Enzymatic dyeing of wool
title_sort Enzymatic dyeing of wool
author Tzanov, Tzanko
author_facet Tzanov, Tzanko
Silva, Carla J. S. M.
Zille, Andrea
Oliveira, Jovita
Paulo, Artur Cavaco
author_role author
author2 Silva, Carla J. S. M.
Zille, Andrea
Oliveira, Jovita
Paulo, Artur Cavaco
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Tzanov, Tzanko
Silva, Carla J. S. M.
Zille, Andrea
Oliveira, Jovita
Paulo, Artur Cavaco
dc.subject.por.fl_str_mv Laccase
Wool
topic Laccase
Wool
description This study reports for the dyeing of wool using an enzymatic system comprising laccase (EC 1.10.3.2), dye precursor - 2,5-diaminobenzenesulfonic acid and dye modifiers – cathehol and resorcinol. The effect of the process variables - reaction time, enzyme and modifiers concentration on fabrics colour was studied, according to an appropriate experimental design. Different hues and depth of shades could be achieved varying the concentration of the modifiers and the time of laccase treatment. The duration of the enzymatic reaction appeared to be the most important factor in the dyeing process. Thus the dyeing process, performed at low temperature and mild pH, was advantageous in terms of reduced enzyme and chemicals dosage. The ability of the laccases to generate colour “in situ” from originally non-coloured, low-molecular substances, appears as an alternative to the conventional dyeing processes. The dye precursors can be used alone or in combination with suitable modifier (coupler) – another phenolic compound, which together with the dye precursor will enlarge the colour pallet achieved in the enzymatic dyeing.
publishDate 2002
dc.date.none.fl_str_mv 2002-10
2002-10-01T00:00:00Z
dc.type.driver.fl_str_mv conference poster
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/25241
url http://hdl.handle.net/1822/25241
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Tzanov, T.; Silva, Carla J.; Zille, Andrea; GUBITZ, G; Artur, Cavaco-Paulo. Effect of the process parameters in enzymatic dyeing of wool, Trabalho apresentado em COST action 847 Mid term evaluation meeting, In Cost action final report, Como, 2002.
http://www.cost.eu/domains_actions/fa/Actions/Textile_Quality_and_Biotechnology
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 European Cooperation in Science and Technology (COST)
publisher.none.fl_str_mv European Cooperation in Science and Technology (COST)
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 mluisa.alvim@gmail.com
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