Enzymatic dyeing of wool
Autor(a) principal: | |
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Data de Publicação: | 2002 |
Outros Autores: | , , , |
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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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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7160 |
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 |
_version_ |
1817545028902322176 |